bet
An informal affirmative meaning yes, agreed, understood, or I accept the challenge.
By Cal Hewitt, Gen X · ·
What it means
As slang, bet confirms an arrangement, approves an idea, or accepts a challenge. It can be sincere, clipped, or lightly playful, and its tone depends on the surrounding conversation. The current form is not an acronym and does not refer to the TV network BET.
See the quick definition in the bet dictionary entry.
How to use it
“Can you send the notes after class? Bet.”
Confirming that you will do something.
“Meet at seven? Bet, I’ll be there.”
Agreeing to a plan.
Where it came from
Merriam-Webster traces slang bet to African American English in the 1980s, likely as a shortening of older affirmative expressions such as you bet and you can bet on it. Those older expressions are recorded in American English from the 1850s and build on the ordinary verb bet, meaning to wager.
No single person is credited, the origin is well-documented.
Where it's popular
African American English, then broadly English-language U.S. social media, texting, and youth conversation.
Merriam-Webster says the slang sense gained wider prominence on social media in the late 2010s and early 2020s.
How it caught on
- 1850sYou bet is recorded in American English as an affirmative expression.
- 1980sMerriam-Webster places the shorter slang bet in African American English.
- Late 2010s to early 2020sMerriam-Webster reports that the slang sense gained broader prominence through social media.
Common mix-ups
Bet does not always mean money is being wagered. In this slang sense, it is usually an affirmative response, though it can also signal acceptance of a challenge.
Test yourself
Do you really mean bet?
0/31. What does bet usually do in a text exchange?
2. Which language community is Merriam-Webster’s documented source for the modern slang sense?
3. Which older expression is most directly connected to slang bet?
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"bet" made it onto a shirt. LOST IN TRANSLATION shirts and hoodies: grandparents and Gen Z misreading each other's slang. Made for families who speak two kinds of slang, and great as a gift.
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Related slang
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Questions people ask
What does bet mean in slang?
It means an informal yes, agreement, approval, or acceptance.
Where did slang bet come from?
Merriam-Webster traces it to African American English in the 1980s, likely shortened from older expressions such as you bet.
Is bet an acronym?
No. It is a shortened affirmative use of the ordinary English word bet.
The modern one-word reply has a much older family tree: you bet was already an American affirmative in the 1850s.
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