say it: uhn-pur-TURBD
unperturbed is an adjective meaning "free from emotional agitation or nervous tension". It carries one recorded sense.
free from emotional agitation or nervous tension
“the waiters were unflurried and good natured”
“with contented mind and unruffled spirit”
Definitions, synonyms and semantic relations for unperturbed come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.