adjective Slang.

not self-assured or relaxed: He felt very uncool, making a speech to strangers.
not sophisticated or worldly-wise.

Origin of uncool

1955–60; un-1 + cool (in the slang senses “socially adept”)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for uncool

Contemporary Examples of uncool

British Dictionary definitions for uncool


adjective slang

unsophisticated; unfashionable
excitable; tense; not cool
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 uncool

1953, in hipster slang, from un- (1) "not" + slang sense of cool (adj.).

Online Etymology Dictionary, © 2010 Douglas Harper