Who did it? I dunno!
/dʌˈnəʊ; dʊ-; də-/
(I) do not know
colloquial for “(I) don’t know,” first attested 1842 in American English.
Don’t know •Casual pronunciation of don’t know: dunno where he is (1840s+)
[duhn-uh k] /ˈdʌn ək/ noun, British. 1. . /ˈdʌnək/ noun 1. another name for hedge sparrow
[duhn-vil] /ˈdʌn vɪl/ noun 1. a town in SE Ontario, in S Canada.
[duhn-ee] /ˈdʌn i/ noun, plural dunnies. Australian Slang. 1. an outside privy; outhouse. /ˈdʌnɪ/ noun (pl) -nies 1. (Scot, dialect) a cellar or basement 2. (dialect) another word for dunnakin 3. (Austral & NZ, informal)
/dəˈnuːn/ noun 1. a town and resort in W Scotland, in Argyll and Bute, on the Firth of Clyde. Pop: 8251 (2001)