Meaning of “fiendishly” in the English Dictionary

british dictionary

"fiendishly" in British English

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fiendishlyadverb

uk /ˈfiːn.dɪʃ.li/ us /ˈfiːn.dɪʃ.li/ informal

extremely:

fiendishly difficult

(Definition of “fiendishly” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"fiendishly" in American English

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fiendishlyadverb

us /ˈfin·dɪʃ·li/

extremely:

The murder mystery had a fiendishly clever plot.

(Definition of “fiendishly” from the Cambridge Academic Content Dictionary © Cambridge University Press)

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