nitwit

[ nit-wit ]
/ ˈnɪtˌwɪt /

noun

a slow-witted, stupid, or foolish person.

Origin of nitwit

1920–25; nit (< German; dialectal variant of nicht not) + wit1(in the sense of ‘intelligence’)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nitwit

British Dictionary definitions for nitwit

nitwit

/ (ˈnɪtˌwɪt) /

noun

informal a foolish person

Word Origin for nitwit

C20: perhaps from nit 1 + wit 1
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