imperturbable


im·per·turb·able

adjective \ˌim-pər-ˈtər-bə-bəl\

: very calm : very hard to disturb or upset

Full Definition of IMPERTURBABLE

:  marked by extreme calm, impassivity, and steadiness :  serene
im·per·turb·abil·i·ty \-ˌtər-bə-ˈbi-lə-tē\ noun
im·per·turb·ably \-ˈtər-bə-blē\ adverb

Examples of IMPERTURBABLE

  1. Although he seems outwardly imperturbable, he can get very angry at times.
  2. <the chef was absolutely imperturbable—even when the kitchen caught on fire>

Origin of IMPERTURBABLE

Middle English, from Late Latin imperturbabilis, from Latin in- + perturbare to perturb
First Known Use: 15th century

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