A complete sports betting glossary for 2026 — every term you need to know, explained in plain English.
A
Action — Money wagered on a game. Also used to describe whether a bet is live ("does my bet have action if the pitcher changes?").
Against the Spread (ATS) — Betting against the point spread, not just on who wins.
B
Bad Beat — A bet that appeared to be winning until a late-game event caused it to lose.
Bankroll — The total amount of money set aside for sports betting.
Book/Bookmaker — The entity that sets lines and accepts bets. Also called a sportsbook.
C
Chalk — The favorite in any betting market.
Closing Line — The final odds at a market before the event starts. Beating the closing line (positive CLV) is the strongest signal of long-term betting skill.
Closing Line Value (CLV) — The difference between the odds you bet and the closing line. Positive CLV means you got a better price than the final market.
Cover — To win against the point spread.
D
Dime Line — A market with 10 cents of juice between the two sides (e.g., -105 / +105).
Dog/Underdog — The team or player expected to lose.
E
Edge — A mathematical advantage over the sportsbook on a specific bet.
Expected Value (EV) — The long-run average outcome of a bet. Positive EV (+EV) bets are profitable over time.
F
Fade — To bet against a team or a trend.
Futures — Bets placed on long-term outcomes such as championship winners or season MVP.
H
Handle — Total money wagered on an event or at a sportsbook.
Handicapper/Capper — Someone who analyzes games and selects bets.
Hook — The half-point in a spread (e.g., -3.5 instead of -3).
J
Juice/Vig — The commission the sportsbook takes on bets. Standard juice at -110 means you pay about 4.5% to the house.
L
Line — The current odds on a game or event.
Line Shopping — Comparing odds across multiple sportsbooks to find the best price.
M
Middle — Winning both sides of a bet when the line moves far enough to create a range where both bets win.
Moneyline — A straight bet on who wins the game, without a spread.
O
Off the Board — A game removed from betting, typically due to injury news or unusual movement.
Over/Under (Total) — Betting on whether combined points will be over or under a set number.
P
Parlay — A bet combining multiple games into one wager. All picks must win.
Pick Em / PK — A game with no point spread — you simply pick the winner.
Point Spread — The handicap assigned to create balanced betting on both sides.
Prop Bet — A bet on a specific in-game event or player statistic.
Push — A tie — when the result lands exactly on the spread. Bet is refunded.
S
Sharp — A professional or sophisticated bettor whose action moves lines.
Square — A recreational bettor whose action does not significantly affect lines.
Steam — A sudden, coordinated line move driven by sharp action hitting multiple books simultaneously.
Syndicate — A group of professional bettors who pool resources to place coordinated wagers.
T
Teaser — A type of parlay where you move the spread in your favor on multiple games, at the cost of lower odds.
Total — See Over/Under.
U
Unit — A standardized bet size, usually 1% of total bankroll.
V
Value — A bet where the true probability of winning is higher than the implied probability in the odds.
Vig — See Juice.
The Gap Most Bettors Face
The challenge most sports bettors face is that knowing terminology is not enough — you also need to know which markets you are actually performing well in. Knowing what CLV means is useless if you never track yours.
Oddible automatically syncs your bets from DraftKings, FanDuel, BetMGM, and 30+ other books so you can see your true performance data — including your CLV, win rate by bet type, and ROI by sport.
Track your results and learn from real data with Oddible — free, syncs automatically, and shows you where you are winning and losing.
Not gambling advice. Only bet what you can afford to lose.
