1. graded adjective & adjective If you describe something such as a story or a sports match as nail-biting, you mean that it makes you feel very excited or nervous because you do not know how it is going to end. ⇒ ...England's magnificent nail-biting 75-71 win over Russia. ⇒ ...the nail-biting legal thriller, 'The Pelican Brief'. 2. uncountable noun Nail-biting is the activity of biting the ends of your fingernails, for example because you are anxious. ⇒ ...negative behaviour patterns such as nail-biting or thumb-sucking.
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