who dun it
Preserved but no longer current.
Meaning · English
(U.S.A. slang). A crude detec- tive story. Whoopee (woo pe') (Slang). Uproaripusness, noisy merriment. As an exclamation it is one of excited pleasure.
Era: ca. 1898 (Victorian)
Sources & notes
Reproduced from Brewer’s Dictionary of Phrase and Fable (1898 edition, public domain; archive.org, retrieved 2026-07-31; OCR text, minor errors possible). Reflects the scholarship and attitudes of its era.
Common questions
What does “who dun it” mean?
(U.S.A. slang). A crude detec- tive story. Whoopee (woo pe') (Slang). Uproaripusness, noisy merriment. As an exclamation it is one of excited pleasure.
Is “who dun it” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.