un·flap·pa·ble | \ ˌən-ˈfla-pə-bəl \

Definition of unflappable 

: marked by assurance and self-control

Keep scrolling for more

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)

Visit the Thesaurus for More 

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

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 Germany could do worse than a new chancellor who is able to combine Mrs Merkel’s unflappable maturity with a greater willingness to think ahead to the 2030s. The Economist, "An interview with Germany’s finance minister, Olaf Scholz," 12 July 2018 Legere, appearing in a black T-Mobile-logoed sports coat and a magenta T-Mobile tee shirt, was unflappable. Aaron Pressman, Fortune, "Data Sheet—T-Mobile CEO John Legere Emerges From Capitol Hill Grilling Unscathed," 29 June 2018 Whether the attacking quality of the French will be enough to overcome the resolute determination and unflappable work rate of the South Americans remains to be seen. SI.com, "Quality vs Fire: Why Uruguay's Clash With France Could Indicate How the World Cup Will Be Won," 4 July 2018 Sure, that was an exaggeration, but the crowd’s screams matched the singer’s unflappable energy. Milwaukee Journal Sentinel, "Best and worst of Summerfest Day 6: Steven Tyler, Foster the People, Trace Adkins and more," 3 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.

See More

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

Keep scrolling for more

Learn More about unflappable

Share unflappable

Statistics for unflappable

Last Updated

2 Sep 2018

Look-up Popularity

Time Traveler for unflappable

The first known use of unflappable was in 1954

See more words from the same year

Keep scrolling for more

More Definitions for unflappable



English Language Learners Definition of unflappable

: not easily upset : unusually calm in difficult situations

Keep scrolling for more

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).


by word of mouth

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!