- a deranged person; lunatic.
Origin of nut case
First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Wordsbigot, freak, lunatic, fanatic, loony, zealot, fiend, psycho, psychopath, maniac, sociopath, misfit, geek, crackpot, enthusiast, kook, screwball, nut, flake, loon
- slang an insane or very foolish person
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