Definition of “frightening” - English Dictionary

“frightening” in British English

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frighteningadjective

uk /ˈfraɪ.tən.ɪŋ/ us /ˈfraɪ.tən.ɪŋ/

B1 making you feel fear:

a frightening thought
a frightening film
It is frightening to think what might happen if she left him.

More examples

  • The mask was so lifelike it was quite frightening.
  • The deathly pallor of her skin was frightening.
  • She found the film extremely frightening.
  • The firefighters had a frightening task ahead of them.
  • There's a frightening similarity between this incident and one that occurred last year.
frighteningly
adverb uk /ˈfraɪ.tən.ɪŋ.li/ us /ˈfraɪ.tən.ɪŋ.li/

She looked frighteningly thin.

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

“frightening” in American English

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frighteningadjective

us /ˈfrɑɪ·tən·ɪŋ/

making you feel fear:

a frightening situation

Frightening can also mean extreme:

My car insurance payments are frightening.
frighteningly
adverb us /ˈfrɑɪ·tən·ɪŋ·li/

His heart rate changed frighteningly.

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