unflappable

adjective

un·​flap·​pa·​ble ˌən-ˈfla-pə-bəl How to pronounce unflappable (audio)
Synonyms of unflappable
: marked by assurance and self-control
has a reputation for being unflappable even in the worst situations
unflappability
ˌən-ˌfla-pə-ˈbi-lə-tē How to pronounce unflappable (audio)
noun
unflappably
ˌən-ˈfla-pə-blē How to pronounce unflappable (audio)
adverb

Synonyms of unflappable

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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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Smart, funny, incisive, generous and, perhaps above all, unflappable. — Culture Critic, Los Angeles Times, 4 Sep. 2026 In this novel Amis is as unflappable as ever, and his dry humour and the dark undertone of the novel are exactly my taste. — Literary Hub, 2 Sep. 2026 Behind them, manning the decks, was Margo XS, unflappable in her wraparound shades. — Walden Green, Pitchfork, 30 July 2026 Why The Executive Playbook Has To Change The typical model for high-achieving leaders is to out-suffer everyone else in the room, appear unflappable, stay silent on struggles, and be the first one in and last one out. — Julian Hayes Ii, Forbes.com, 25 July 2026 See All Example Sentences for unflappable

Word History

Etymology

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

First Known Use

1954, in the meaning defined above

Time Traveler
The first known use of unflappable was in 1954

Browse Nearby Words

unflamboyant
unflappable
unflapped
See all Nearby Words

Cite this Entry

“Unflappable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unflappable. Accessed 7 Sep. 2026.

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Kids Definition

unflappable

adjective
un·​flap·​pa·​ble ˌən-ˈflap-ə-bəl How to pronounce unflappable (audio)
: not easily upset or panicked : unusually calm
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