imperturbable

adj.

definition

unexcitable; unflustered; calm

synonyms

composed

cool

nerveless

antonyms

excitable

jittery

perturbable

sentences

1.) The students were imperturbable and refused to laugh at their teacher's corny jokes.

2.) The worst kind of people to prank are the ones that act imperturbable.

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Funny guy makes Royal Guard Laugh at Buckingham Palace

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