fiendish

English

Etymology

From fiend +‎ -ish.

Pronunciation

  • IPA(key): /ˈfiːndɪʃ/
  • Audio (Southern England):(file)

Adjective

fiendish (comparative more fiendish, superlative most fiendish)

  1. Sinister; evil; like a fiend.
    Synonym: conniving
    The detective was puzzled by the fiendish plot to steal the diamonds.
    She had a fiendish smile that hinted at a cunning plan.
  2. Very difficult.
    The exam was filled with fiendish questions that made no sense.
    a fiendish crossword puzzle

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