Betting Glossary

A single bet combining multiple selections where each selection's odds multiply together. Every selection must win for the bet to pay out. Also called a parlay in North American betting.

Any wager that has been placed and is active. If you have action on a game, you have a live bet on it. Also used to describe the overall volume of money wagered on a specific event.

Modified spreads or totals offered at adjusted prices. They allow bettors to move the line up or down in exchange for better or worse odds, changing the risk-reward profile of the bet.

A format that uses positive and negative numbers. A positive number shows the profit on a 100-unit stake. A negative number shows the stake required to win 100 units of profit.

A bet placed well before an event begins, often weeks or months in advance. Prices are typically more generous, but non-runners usually result in a lost stake with no refund.

Placing bets on all possible outcomes across different sportsbooks to secure a guaranteed profit by exploiting pricing discrepancies. Requires speed, multiple accounts, and precise calculation.

A form of handicap betting that eliminates the draw by using half or quarter goal lines. Produces a two-way market and typically carries lower margins than standard 1X2 markets.

The total amount of money a bettor has set aside specifically for betting. Disciplined bankroll management through consistent staking rules is one of the most important habits in wagering.

A selection considered so likely to win that it forms the foundation of a multiple bet. A banker must win for any accumulator or system bet built around it to pay out.

Sportsbook credit used to place wagers but not withdrawable directly. If a bonus bet wins, the winnings are collected but the stake itself is not returned.

A company or individual that accepts bets on sporting events, sets the odds, and pays out winnings. Also called a sportsbook, bookie, or operator depending on the context and region.

Betting slang for a 100-unit wager. The term originates from North American betting culture where a buck referred to a hundred dollar bet rather than the standard currency meaning of one dollar.

A feature that allows bettors to settle a bet before the event has finished, receiving a return based on the current state of play. Can be used to lock in profit or cut losses early.

The final price offered on a market at the moment the event begins. Considered the most accurate market price as it has absorbed the most information, including sharp money and late news.

A market requiring prediction of the exact final scoreline of a match. Carries long odds because of the precision required. Popular in football and used across other scoring sports.

Meeting or beating the point spread. A favourite covers if it wins by more than the spread. An underdog covers if it wins outright or loses by less than the spread.

When two or more competitors finish in an identical position. Stakes are typically divided proportionally between the tied selections, reducing the payout on each tied outcome.

The standard format across Europe, Australia, and most of the world. The number represents total return per unit staked including the original stake. Odds of 3.00 return three times the stake.

Betting slang for a 1,000-unit wager. Used in North American betting culture alongside buck and nickel to describe bet sizes without mentioning specific currency amounts.

An accumulator containing exactly two selections. Both must win for the bet to pay out. The simplest form of multiple bet and a common starting point for bettors exploring accumulators.

A two-way market that removes the draw as a possible outcome. If the match ends level, the stake is returned. If the backed team wins, the bet pays. If they lose, the stake is lost.

When a selection's odds lengthen, moving to a higher price. A drifting favourite is one whose price is increasing, suggesting money is moving away from it or confidence is declining.

A format placing two equal stakes simultaneously: one for the selection to win and one for it to finish within a defined number of places. Common in horse racing and golf.

Odds where the potential profit equals the stake. In decimal odds, even money is 2.00. In fractional odds, it is 1/1 or evens. In American odds, it is plus 100.

A measure of the long-term profitability of a bet. Positive expected value means the implied probability in the odds is lower than the true probability. Negative expected value means the reverse.

The date and time by which a bonus, free bet, or promotional credit must be used or wagering requirements must be completed. After expiry, unclaimed or uncleared bonuses are typically forfeited.

The outcome with the lowest odds and the highest implied probability in a market. In decimal odds, any price below 2.00 indicates a favourite. The favourite is not always the value bet.

Odds that are locked in at the time of placing the bet. Regardless of how the market moves after the bet is accepted, the price remains the same at settlement.

Wagering the same amount on every bet regardless of confidence level. Simple, consistent, and particularly well suited for bettors who are still developing their analytical process.

The traditional British format displayed as fractions such as 5/1 or 3/2. The first number shows the profit for every unit represented by the second number staked. Does not include the stake in the return figure.

A promotional wager where the stake is provided by the sportsbook. If the bet wins, only the profit is collected, not the stake itself. Most efficiently used at higher odds to maximise conversion value.

Long-term bets on outcomes resolved at the end of a season or tournament, such as league winners, cup champions, or individual award markets. Prices are typically most generous before the season begins.

A totals market covering the combined score across all games in a single day within a specific league or sport. Most common in ice hockey and baseball, where multiple games occur simultaneously.

The process of settling a bet after an event has concluded. A bet is graded as a win, loss, push, or void depending on the outcome relative to the terms of the wager.

A virtual advantage or disadvantage assigned to a team or player before the event begins to level the market. A team given minus one must win by more than one for the bet to pay out.

Placing a bet on the opposite side of an existing wager to reduce risk or lock in profit regardless of the final outcome. Commonly used to protect a futures bet as the event approaches.

The half point in a spread or total that prevents a push. A spread of minus three and a half instead of minus three means the favourite must win by at least four rather than three.

The mathematical advantage a sportsbook holds over bettors through the margin built into every market. Also called the vig, juice, or overround. It ensures the book profits over a large sample of bets.

The probability of an outcome suggested by the odds. Calculated by dividing one by the decimal odds. Odds of 4.00 imply a 25 percent probability. Comparing this to your own assessment is the foundation of value betting.

Placing bets while an event is in progress. Markets update continuously in response to game events. Also called live betting. Available across most major sports at major sportsbooks.

The commission built into a market by the sportsbook. Also called the vig or overround. On a standard two-way market priced at 1.90 on both sides, the juice represents the excess above 100 percent implied probability.

A mathematical formula for calculating optimal stake size based on perceived edge and bankroll. Suggests betting a percentage of your bankroll proportional to your edge. Widely used in theory but often applied in fractional form to reduce variance.

The most common winning margins in a specific sport. In American football, three and seven are key numbers because of the scoring structure. Lines set on either side of a key number carry different probability implications.

Betting against an outcome rather than for it. Available on betting exchanges. A lay bet on a team winning means you win if that team draws or loses. The role of the bookmaker played by the individual bettor.

The odds or point spread set by a sportsbook for a specific market. The line moves in response to betting volume, new information, and sharp money. Also used as a general term for the available price on any selection.

The change in odds or spread from the opening line to the closing line. Significant movement without obvious news often indicates sharp money coming in on one side of the market.

Comparing odds across multiple sportsbooks before placing a bet to secure the best available price. Consistently capturing better prices compounds into a meaningful long-term edge.

See in-play betting. Markets available during an event that update in real time in response to what is happening on the field, court, or ring.

A selection considered a near-certain winner. Used informally by bettors who feel a bet is as close to guaranteed as possible. No bet is ever truly a lock. The term is more often a confidence expression than an analytical one.

A selection with long odds and a low implied probability. Longshots pay generously when they win but win infrequently. They are not automatically poor bets if the true probability is higher than the implied price suggests.

The built-in profit edge a sportsbook includes in every market. When all implied probabilities in a market are added together, the total exceeds 100 percent. The excess is the margin. Lower margins mean better value for the bettor.

A head-to-head market between two named competitors or teams on which will finish higher or perform better in a specific context. Common in golf, racing, and player versus player comparisons.

A straight bet on which team or player wins, with no spread or handicap involved. In North American usage, moneyline refers specifically to the American odds format as well as the market type.

Any bet combining more than one selection. Includes doubles, trebles, accumulators, and system bets. All legs must perform as required for the bet to pay out in its full form.

Betting slang for a 500-unit wager, originating from North American betting culture. Used alongside buck and dime to describe stake sizes without referencing specific currency amounts.

A bet that is voided and the stake returned, typically because the event was cancelled, postponed, or the selection withdrew before the event began. Most sportsbooks return stakes on no-action bets.

A promotional credit given to new customers simply for registering, without requiring a deposit. Rare and typically small in value, with strict wagering requirements and tight expiry windows attached.

A numerical expression of the probability of an outcome and the potential return on a successful bet. Available in decimal, fractional, and American formats. Every set of odds contains both a payout multiplier and an implied probability.

A temporary enhancement to the price on a specific selection. No wagering requirements apply. You bet at the boosted price and collect at that price if it wins. Usually capped at a maximum stake.

The first price published by a sportsbook when a market opens. Often carries the widest margins and the most pricing uncertainty before significant betting volume has shaped the line.

A bet on who will win a competition, tournament, or series outright before it begins. Also called a futures bet. Prices are typically most generous early before the competitive landscape becomes clearer.

The sum of all implied probabilities in a market, which exceeds 100 percent due to the sportsbook's margin. A market with a 106 percent overround carries a six percent edge for the sportsbook across all outcomes.

A market on whether a statistical total will finish above or below a set number. Also called totals. Available across all major sports covering goals, points, games, rounds, and individual player statistics.

The North American term for an accumulator. Multiple selections combined into a single bet where each selection's odds multiply together. Every leg must win for the parlay to pay out.

Another term for wagering requirement or rollover. The total amount you must wager before bonus winnings become withdrawable. All three terms refer to the same condition.

A handicap market most commonly used in American football and basketball. The favourite must win by more than the spread. The underdog can lose by less than the spread and still cover.

The odds available on a specific outcome. Used interchangeably with odds in most betting contexts. Getting the best price means securing the highest available return for a given selection.

Short for proposition bets. Markets on specific player or team statistical outcomes within an event, rather than the overall result. Goals, assists, passing yards, strikeouts, and saves are common prop categories.

When a bet lands exactly on the spread or total line, resulting in neither a win nor a loss. The stake is returned. For example, if the total is set at six goals and exactly six are scored, the bet pushes.

The ice hockey equivalent of a point spread, almost always set at minus or plus one and a half goals. A puck line favourite must win by at least two goals. An underdog can lose by one and still cover.

A bet that meets the conditions required to trigger a bonus or promotion. Often involves a minimum stake and minimum odds. Only qualifying bets count toward completing a wagering requirement or unlocking a promotional offer.

A deposit match or bonus bet offer available to existing customers on subsequent deposits. Typically less generous than welcome bonuses. Often timed around major sporting events.

The total amount paid out if a bet wins, including the original stake. A ten-unit bet at decimal odds of 3.00 returns thirty units: twenty units of profit plus ten units stake back.

See wagering requirement and playthrough. The number of times bonus funds must be wagered before winnings become withdrawable. All three terms describe the same condition.

The baseball equivalent of a point spread, typically set at minus or plus one and a half runs. Similar to the puck line in ice hockey, it adjusts pricing between the two sides rather than changing the winner prediction.

The specific outcome you are backing in a bet. The team, player, or result you have chosen. In a multiple bet, each individual pick is referred to as a selection or a leg.

A bettor with a consistent track record of profitability who bets large volume and influences line movement. Sportsbooks adjust prices when sharp money comes in. Also used as an adjective to describe informed, analytical betting.

A bet on one selection only. The simplest bet type. Wins or loses based solely on the outcome of that one selection. Most professional bettors place the majority of their wagers as singles.

A points handicap applied to a market to balance the wagering on both sides. The favourite gives points and the underdog receives points. Most commonly used in American football and basketball.

A casual or recreational bettor who tends to bet on popular teams and high-profile markets without deep analytical research. Squares typically move public betting percentages rather than sharp line movement.

The amount of money wagered on a bet. The stake is at risk and lost if the bet loses. If the bet wins, the return includes the stake plus the profit at the agreed odds.

A sudden, significant move in a line across multiple sportsbooks simultaneously. Steam typically indicates coordinated sharp action on one side of a market that forces multiple books to adjust their prices at once.

A structured multiple bet that covers various combinations of selections so that not all legs need to win for a return. Examples include Yankees, Heinz, and Trixie. Provides partial cover at the cost of lower maximum returns.

A modified parlay in American football or basketball that allows bettors to move the point spread in their favour in exchange for lower odds. Both legs must still win for the teaser to pay out.

Markets on whether the combined score of both teams will finish above or below a set number. Also called over and under. One of the most widely available market types across all major sports.

An accumulator containing exactly three selections. All three must win for the bet to pay out. The second simplest form of multiple bet after the double.

The actual probability of an outcome occurring, before any sportsbook margin is applied. True odds represent a fair price. Sportsbooks price markets below true odds by including their margin on all outcomes.

The outcome with the highest odds and the lowest implied probability in a market. In American odds, the underdog carries a positive price. Underdogs are not automatically poor bets if their true probability exceeds the implied price.

A standard measure of stake size relative to a bettor's bankroll. Using units rather than absolute amounts allows for consistent staking across different bankroll sizes. One unit is typically one to two percent of total bankroll.

A bet where the implied probability in the odds is lower than the bettor's assessed true probability of the outcome. Identifying value consistently over a large sample is the foundation of profitable long-term betting.

The natural fluctuation in betting results over a sample of bets. Even positive expected value bets lose regularly due to variance. Understanding variance prevents overreacting to short-term results in either direction.

The commission built into a sportsbook's markets. Also called juice or overround. The vig ensures the sportsbook profits across all outcomes over a large volume of bets, regardless of who wins individual events.

A bet that is cancelled and the stake returned. Common reasons include event postponement, a selection withdrawing before the event, or a market being settled in error and then corrected.

The total amount you must wager before bonus winnings become withdrawable. Expressed as a multiplier of the bonus amount. A ten times requirement on a one hundred unit bonus means one thousand units of qualifying bets.

A promotional offer available to new customers when registering with a sportsbook. Almost always the most generous offer that operator will make. Available in formats including deposit match, free bets, and bet and get promotions.

Any bet placed on a sporting event. Used interchangeably with bet in most contexts. To wager on something means to stake money on a predicted outcome.

A market predicting the range of points or goals by which a specific team wins. Banded into ranges such as one to six, seven to twelve, and so on. Rewards more precise assessment than a standard handicap market.

The standard three-way football betting market covering a home win, draw, or away win. Named after the notation used on football pools coupons. The most fundamental market in European football betting.

A system bet covering four selections across eleven bets: six doubles, four trebles, and one fourfold accumulator. At least two selections must win for any return. A popular system bet in horse racing.

A pricing model offered by some sportsbooks on selected markets where no margin is built in. Implied probabilities add up to exactly 100 percent. Rare and typically limited to specific markets or promotional windows.