unflappable

[uhn-flap-uh-buhl]

adjective

1. not easily upset or confused, especially in a crisis; imperturbable.

unflappable

/ ʌnˈflæpəbəl /

adjective

1. informal,  hard to upset; imperturbable; calm; composed

Other Word Forms

• unflappability noun
• unflappably adverb

Word History and Origins

Origin of unflappable¹

First recorded in 1950–55; un- ¹ + flap + -able

Example Sentences

Cooper shows the unflappable cool of a modern Robin Hood.

From Los Angeles Times

But what makes the show worth watching are Weatherly and De Pablo, two extremely attractive middle-aged people with genuine chemistry; he’s superheroically unflappable without ever seeming anything but a regular Joe.

From Los Angeles Times

But there’s a new twist that threatens to undermine the unflappable protagonist, and it’s a teenager’s worst nightmare — even for a girl who enjoys night terrors.

From Los Angeles Times

His Lions and Ireland coach Andy Farrell calls him horizontal, such is his unflappable personality.

From BBC

His unflappable persistence to move from one pitch, one start, one year to the next; never satisfied with his best moments nor shaken by his rare failures.

From Los Angeles Times

Related Words

• composed 
• impassive 
• nonchalant 
• relaxed 
• self-possessed 
• unruffled