Pronunciation Spelling.

don't know: Who did it? I dunno!

Origin of dunno

First recorded in 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for dunno

Contemporary Examples of dunno

Historical Examples of dunno

  • I get a horse with somethin' the matter of his foot, and I dunno what.

  • I dunno as wimmin horse doctors is very common, but I dunno why not.

  • I dunno how you're goin' to git along with men-folks, if ye offer 'em the whip-hand.

    Tiverton Tales

    Alice Brown

  • If you stop her off there, I dunno but she'd jine a circus or take to drink!

    Tiverton Tales

    Alice Brown

  • "Why, I dunno's there's anything in the way of it," she said, soberly.

    Meadow Grass

    Alice Brown

British Dictionary definitions for dunno


contraction of

(I) do not know
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for dunno

colloquial for "(I) don't know," first attested 1842 in American English.

Online Etymology Dictionary, © 2010 Douglas Harper