Betting involves many terms and abbreviations that can be confusing for beginners. This guide covers 50 popular betting terminolog and abbreviations to help new players understand key concepts clearly and place bets confidently on trusted platforms like 91 Club.
Understand Common Abbreviations
For newcomers, one of the biggest hurdles is understanding the betting terminology that shows up across online platforms. Abbreviations like RTP, EV, or HT might look confusing at first, but they form the core language of gambling.

Here are some must-know abbreviations that dominate casino and sportsbook interfaces:
- RTP (Return to Player): This piece of betting terminology refers to the percentage a game pays back to players over time. For instance, a slot with 96% RTP pays back 960,000 VND per 1,000,000 VND wagered on average.
- FT (Full Time): Used in sports betting to indicate the final result after 90 minutes of play.
- O/U (Over/Under): A common betting term for wagering on whether the total score will be over or under a set number.
- HT (Half Time): A bet specifically on the outcome of the first half in a sporting event.
- EV (Expected Value): Indicates the projected profit or loss from a wager over time—a crucial concept in mastering betting terminology.
These abbreviations make up a universal shorthand, allowing players to digest complex information quickly. Once you internalize this layer of betting terminology, you’ll start reading odds and placing wagers with much more confidence.
Concepts Players Must Understand Before Placing Bets
Beyond short forms, understanding broader betting terminology is essential for anyone aiming to gamble strategically. These foundational concepts explain how odds, payouts, and casino mechanics work:
- House Edge: A core term in betting terminology, it describes the casino’s built-in advantage. In blackjack, for example, the house edge may be around 1%, while in slots it can reach 8–10%.
- Volatility: This betting term refers to how often and how much a game pays. High-volatility games offer large but rare wins; low-volatility games pay smaller amounts more often.
- Variance: Often confused with volatility, this is another key piece of betting terminology used to explain outcome consistency. Lower variance means more predictable results.
- Bankroll: Refers to the total funds set aside for gambling—an essential concept for money management within any betting strategy.
- Stake: The amount you place on a single wager.
- Tilt: A psychological term in betting terminology, it refers to a state of emotional instability that leads to reckless bets, often after losses.
Grasping this layer of betting terminology is particularly valuable in high-pressure settings like Live Casino games, where decision-making speed and emotional control go hand in hand.

Sports Betting Glossary – Read the Odds Like a Pro
Sports betting has its own specialized layer of betting terminology. Understanding the language of odds and match outcomes is essential to making smart, calculated bets.
- Handicap (HD): A type of spread betting where the favored team gives a goal or point advantage to the underdog.
- 1X2: A widely used betting term in European football. “1” indicates a home win, “X” a draw, and “2” an away win.
- Parlay: A combination bet involving multiple outcomes. A loss in any leg voids the entire bet.
- Outright: A betting term used for wagers on the overall winner of a league or tournament.
- Draw No Bet: You win if your team wins, and your stake is returned if the game ends in a draw.
- Asian Handicap: A format that removes the draw outcome, offering better odds for both sides.
Features like Live Betting and Cash Out—common on platforms such as 91 Club—are now standard parts of modern betting terminology, allowing players to manage risk dynamically during events.
50 Must-Know Betting Terms for Online Play
Below is a curated list of the most common pieces of betting terminology you’ll encounter across casino games, poker tables, and sportsbooks:

- RTP – Return to Player
- RNG – Random Number Generator
- House Edge – Casino Advantage
- Volatility – Win Frequency & Size
- Stake – Bet Amount
- Bankroll – Gambling Budget
- Wager – Placed Bet
- Bet – Gamble
- Payout – Winnings
- Bonus – Promotional Offer
- Freespin – Free Slot Round
- Rebet – Repeat Bet
- Fold – Discard Hand
- Hit – Take Another Card
- Stand – Keep Current Hand
- Split – Divide Hand
- Double Down – Double Stake
- Bluff – Deception Bet (Poker)
- Buy-in – Entry Fee
- Jackpot – Grand Prize
- Multiplier – Prize Multiplier
- Max Bet – Maximum Bet
- Min Bet – Minimum Bet
- All-in – Bet Everything
- Pot – Total Wagered
- Odds – Betting Line
- Over/Under – Total Goals Bet
- Handicap – Point Spread
- Push – Draw (No Win or Loss)
- Side Bet – Additional Bet
- Cash Out – End Bet Early
- Combo Bet – Multi-Leg Bet
- Round – Game Session
- Session – Time at Table
- Line – Betting Row
- Reel – Slot Wheel
- Scatter – Bonus Symbol
- Wild – Substitute Symbol
- Feature – Game Bonus
- Win Rate – Success Ratio
- Return – Cashback
- Hot Slot – Frequent Payout Slot
- Cold Slot – Low Payout Slot
- Reel Stop – End of Spin
- Hit Frequency – Win Rate
- Volatility Index – Risk Rating
- Betting Limit – Max/Min Bet
- Playthrough – Wagering Requirement
- Max Payout – Cap on Winnings
- Time Limit – Bet Timer
You don’t need to memorize all 50 immediately, but the more betting terminology you understand, the better your decision-making will become. On top-tier platforms like 91 Club, this knowledge translates directly into smarter play, lower risk, and more enjoyable sessions.
Understanding these 50 key betting terminology and abbreviations will boost your confidence and skills. Whether you’re a beginner or experienced player, platforms like 91 Club offer a secure environment to apply your knowledge and enjoy betting safely.