Came into English from Late Middle English imperturbable ("undisturbed; impossible to disturb"), borrowed from Late Latin imperturbābilis, from Latin im- (a variant of in-, a prefix meaning "not") plus Late Latin perturbabilis ("perturbable"), itself from Latin perturbō ("to confuse; to alarm, disturb, trouble, perturb") plus -bilis (a suffix forming adjectives denoting a capacity or worth of being acted upon). Perturbō in turn comes from per- (an intensifying prefix) plus turbō ("to agitate, disturb, unsettle, perturb; to upset"), from turba ("disorder, disturbance, turmoil"), possibly from Ancient Greek τῠ́ρβη (tŭ́rbē, "confusion, disorder, tumult"), itself either from Pre-Greek or from Proto-Indo-European *(s)twerH- ("to agitate, stir up; to urge on, propel"), plus -ō (a suffix forming infinitives of regular first-conjugation verbs). By surface analysis it breaks down as im- (a prefix meaning "not") plus perturbable.

Synonyms

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unflappable equable peaceable calm unexcitable equanimous pacific composed collected phlegmatic mellow peaceful

Related words

still peace patient afraid angry collected calm upset

Rhymes for imperturbable

able fable cable table arable viable liable stable tenable parable affable amiable

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Frequently asked questions

What is the meaning of imperturbable?

"imperturbable" (adj) means staying calm and steady, even in a stressful situation.

What is another word for imperturbable?

Other words for "imperturbable" include unflappable, equable, peaceable, calm, unexcitable, equanimous.

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still peace patient afraid angry collected calm upset