un·​flap·​pa·​ble | \ˌən-ˈfla-pə-bəl \

Definition of unflappable 

: marked by assurance and self-control

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Other Words from unflappable

unflappability \ ˌən-​ˌfla-​pə-​ˈbi-​lə-​tē \ noun
unflappably \ ˌən-​ˈfla-​pə-​blē \ adverb

Synonyms & Antonyms for unflappable


imperturbable, nerveless, unshakable


perturbable, shakable (or shakeable)

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Examples of unflappable in a Sentence

He has a reputation for being unflappable. the unflappable teacher never even blinked when the wall map came crashing down

Recent Examples on the Web

After Donnie disappears down the hall, Gunther, an unflappable, ginger-colored terrier mix, pads into the examining room. Amy Sutherland, BostonGlobe.com, "An experimental cancer treatment cured this dog. Could it work for people?," 16 May 2018 Bocchi appeared unflappable and Texas (42-21) proved unassailable in a 5-2 win over Tennessee Tech (53-12). Nick Moyle, San Antonio Express-News, "Bocchi, Clemens lead Texas to CWS for 36th time," 11 June 2018 In even his soberer parts, Stanfield has a disarmingly laid-back, unflappable presence, like his antennae is tuned to a different frequency than everyone else. Washington Post, "Lakeith Stanfield: An actor at home in the surreal," 3 July 2018 Ball has, for most of the season, remained unflappable in his confidence about his shot. Tania Ganguli, latimes.com, "Lonzo Ball is cold beyond the arc in Lakers' 128-125 loss to Pelicans," 23 Mar. 2018 Trump has also managed to rattle usually unflappable Canada by hurling personal insults at its prime minister, Justin Trudeau. Washington Post, "Courting Putin, Trump jolts the West with a nationalist bent," 21 June 2018 Through two days in changing conditions, including some unexpected rain Friday morning that proved to be more than an annoyance over seven holes in mid-round, Johnson stayed patient, calm and unflappable. Joe Juliano, Philly.com, "With another great round, Dustin Johnson holds 4-shot lead at U.S. Open," 15 June 2018 But during a meeting Tuesday with The Chronicle’s editorial board, the candidate seemed unflappable. Rachel Swan, San Francisco Chronicle, "SF mayoral candidate Leno disputes poll showing him slipping behind," 3 Apr. 2018 Elizabeth, the longest reigning monarch in British history, has shown herself to be unflappable when the unexpected occurs. BostonGlobe.com, "Royal etiquette for the Trumps’ visit: Don’t kiss the queen," 13 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unflappable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unflappable

1954, in the meaning defined above

History and Etymology for unflappable

un- entry 1 + flap entry 1 (state of excitement) + -able

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Last Updated

11 Nov 2018

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Time Traveler for unflappable

The first known use of unflappable was in 1954

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English Language Learners Definition of unflappable

: not easily upset : unusually calm in difficult situations

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Comments on unflappable

What made you want to look up unflappable? Please tell us where you read or heard it (including the quote, if possible).


to clear from alleged fault or guilt

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