• synonyms


[uhn-flap-uh-buh l]
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  1. not easily upset or confused, especially in a crisis; imperturbable.
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Origin of unflappable

First recorded in 1950–55; un-1 + flap + -able
Related formsun·flap·pa·bil·i·ty, nounun·flap·pa·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for unflappable

composed, self-possessed, nonchalant, relaxed, unruffled, impassive, collected, deliberate, easy, imperturbable, level-headed, disimpassioned

Examples from the Web for unflappable

Contemporary Examples of unflappable

British Dictionary definitions for unflappable


  1. informal hard to upset; imperturbable; calm; composed
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Derived Formsunflappability or unflappableness, noununflappably, adverb
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 unflappable


1958, from un- (1) "not" + flap (v.) + -able. Originally used in reference to Harold Macmillan, British P.M. 1957-63.

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Online Etymology Dictionary, © 2010 Douglas Harper