ˈnail-ˌbiting BrE AmE adjective [only before noun]
extremely exciting because you do not know what is going to happen next:
The match went all the way to a nail-biting finish.
some nail-biting moments near the end of the movie
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THESAURUS
▪ thrilling /ˈθrɪlɪŋ/ very exciting
▪ gripping a gripping film, story etc is very exciting and interesting
▪ dramatic used about something that is exciting to watch or hear about as it happens:
the dramatic events of the past week
▪ exhilarating /ɪɡˈzɪləreɪtɪŋ/ making you feel happy, excited, and full of energy:
an exhilarating ride
▪ nail-biting very exciting, especially because you do not know what is going to happen next:
a nail-biting finish