Definition of fiendish in English:


Pronunciation /ˈfēndiSH/ /ˈfindɪʃ/

See synonyms for fiendish

Translate fiendish into Spanish


  • 1Extremely cruel or unpleasant; devilish.

    ‘shrieks of fiendish laughter’
    • ‘I seem to be stuck halfway between fiendish laughter and pathetic sobbing.’
    • ‘Human beings over the ages have delighted in the most horrific and fiendish methods of inflicting extreme suffering, pain and mutilation.’
    wicked, cruel, vicious, evil, nefarious, unspeakable
    View synonyms
    1. 1.1informal Extremely awkward or complex.
      • ‘a fiendish problem’
      • ‘The superlatively analytical Inspector Hemingway reveals his unnerving talent for solving a fiendish problem.’
      • ‘She triumphed over a field of men and women of all ages with a winning time of 13 minutes 48 seconds for a super fiendish puzzle.’
      difficult, complex, complicated, intricate, involved, knotty, thorny, ticklish, abstruse, impenetrable, unfathomable
      View synonyms