Bedeutung von “fiendish” — Learner’s Dictionary

fiendish

adjective us uk /ˈfiːndɪʃ/
EVIL

evil or cruel:

a fiendish attack
DIFFICULT

very difficult or complicated:

a fiendish crossword
fiendishly adverb mainly UK

extremely:

fiendishly clever/difficult

(Definition von “fiendish” aus dem Cambridge Learner's Dictionary © Cambridge University Press)