• enPR: bĕt, IPA: /ˈbɛt/

From 16th-century criminal slang, likely from abet or Old English bætan; or from Old French abeter, from a- ("to") + beter ("hound on, urge, to bait"); but in either case ultimately from Proto-Germanic -.

bet (plural bets)

1. A wager, an agreement between two parties that a stake (usually money) will be paid by the loser to the winner (the winner being the one who correctly forecast the outcome of an event).

   Dylan owes Fletcher $30 from an unsuccessful bet.

2. (Philippines, figuratively, informal, by extension) A candidate (for elections and pageants) or competitor (in multinational sports).
3. Indicating a degree of certainty, or that something can be relied upon.

   It’s a safe bet that it will rain tomorrow.

   There's a decent bet that we'll be able to reach the top of that hill in an hour.

   It’s an even bet that Jim will come top of the maths test tomorrow.

   There's a good bet that Sally will arrive later.

• French: pari
• German: Wette
• Italian: scommessa
• Portuguese: aposta
• Russian: ста́вка
• Spanish: apuesta

• German: Wahrscheinlichkeit
• Portuguese: aposta

bet (bets, present participle betting; simple past and past participle bet)

1. To stake or pledge upon the outcome of an event; to wager.
   • c. 1596–1599 (date written), William Shakespeare, “The Second Part of Henry the Fourth, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC ↗, [Act III, scene ii]:

     John a Gaunt loved him well, and betted much money on his head.

   • 1858, Oliver Wendell Holmes Sr., The Deacon's Masterpiece or The Wonderful One-Hoss Shay:

     I'll bet you two to one I'll make him do it.

2. To be sure of something; to be able to count on something.

   Fancy going for a drink after work?
   You bet I do!

3. (poker) To place money into the pot in order to require others do the same, usually only used for the first person to place money in the pot on each round.

• French: parier
• German: wetten
• Italian: scommettere
• Portuguese: apostar
• Russian: би́ться об закла́д
• Spanish: apostar

• Portuguese: apostar
• Russian: быть уверенным
• Spanish: apostar

• Spanish: apostar

1. Expression of general agreement or acceptance.
2. Exclamation indicating acceptance of a challenge or an absurd proposal.
3. Exclamation of joy at good fortune.

From Hebrew בית.

bet (plural bets)

1. Alternative form of beth

Abbreviation.

1. (knitting) between

Named after its inventors Brunauer, Emmett and Teller.

1. (analytical chemistry) An adsorption technique used to measure the specific surface area of a solid, typically using nitrogen gas at a temperature of 77 K.

1. A diminutive of the female name Elizabeth.

• Bets
• Betsy
• Betty
• bouncing Bet