at·​ta·​boy ˈa-tə-ˌbȯi How to pronounce attaboy (audio)
used to express encouragement, approval, or admiration

Word History


probably alteration of that's the boy

First Known Use

1909, in the meaning defined above

Time Traveler
The first known use of attaboy was in 1909

Dictionary Entries Near attaboy

Cite this Entry

“Attaboy.” Dictionary, Merriam-Webster, Accessed 27 Feb. 2024.

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