adjective

unflappable

/ʌnˈflæpəbəl/ · say it: un·FLAP·uh·bul

calm in a crisis; not easily upset

In more detail

1. (adjective) not easily upset, worried, or annoyed, even in difficult situations; remaining calm and composed no matter what happens

Examples

She has an unflappable temperament and stays cool even during stressful meetings.

How to use unflappable

Unflappable describes someone who maintains calm and poise even when facing stress, crisis, or provocation. It emphasizes an admirable, almost inherent ability to stay composed rather than a forced or deliberate effort at calmness. The word carries a tone of approval and is common in professional, personal, and emergency contexts.

Common phrases

unflappable composure
unflappable demeanor
remain unflappable
unflappable in the face of
unflappable under pressure

Synonyms

calm · imperturbable · composed · unflustered · cool-headed

Opposites

excitable · anxious · reactive

Word family

flappable · unflappably · flap

A common mistake

Learners sometimes use unflappable to mean 'indifferent' or 'not caring,' but it specifically means remaining calm while still being engaged and aware, not being emotionally detached or apathetic.

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