frighteninggerund / present participle Denotes the present participle form of the verb 'frighten' used adjectivally.
A frightening thought crossed his mind as he walked home alone.
Une pensée effrayante lui traversa l'esprit alors qu'il rentrait seul à pied.
Gerund-derived noun meaning the act of causing fear; usually uncountable
frightengerund / present participle The present participle "frightening" functions adjectivally ("a frightening experience").
It was a frightening sight.
C’était un spectacle effrayant.