doofus

or du·fus

[ doo-fuh s ]
/ ˈdu fəs /

noun, plural doo·fus·es.

Slang. a foolish or inept person.
Compare goofus.

Origin of doofus

1960–65, Americanism; probably alteration of earlier goofus in same sense
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for doofus

doofus

/ (ˈduːfəs) /

noun

informal, mainly US a slow-witted or stupid person

Word Origin for doofus

C20: from Black slang
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