imperturbable
12 synonyms for imperturbable, grouped by meaning and by how common each one is.
Adj — Staying calm and steady, even in a stressful situation.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Etymology
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...
Full origin of imperturbable →