transcription, транскрипция: [ ˌim-pər-ˈtər-bə-bəl ]
adjective
Etymology: Middle English, from Late Latin imperturbabilis, from Latin in- + perturbare to perturb
Date: 15th century
: marked by extreme calm, impassivity, and steadiness : serene
Synonyms: see cool
• im·per·turb·abil·i·ty -ˌtər-bə-ˈbi-lə-tē noun
• im·per·turb·ably -ˈtər-bə-blē adverb