Sports Betting Glossary: Terms Explained

Plain-English definitions for every sports betting term, from spread and vig to closing line value.

Plain-English definitions for the betting terms you will actually run into, from spread to closing line value.

Quick Stats

  • Spread
  • Moneyline
  • Over/Under (Total)
  • Parlay
  • Same Game Parlay
  • Prop Bet

A to Z Betting Terms

Tap any term for a full definition and example:

New to Betting?

Start with the how-to-bet hub, then come back here for the vocabulary.

Frequently Asked Questions

What does spread mean?

The margin a favorite must win by (or a dog can lose by) for the bet to cash.

What is the vig?

The bookmaker's built-in commission on a bet, also called juice.

What is implied probability?

The win chance baked into the odds; shorter prices imply higher probability.

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