nail biter

Definition

One who habitually bites or chews their fingernails.

Example Sentences

• "It was a real nail biter waiting for the test results."
• "And in a shockingly misogynistic ad, Republicans placed an image of O’Connor in a huddle of three supposedly nightmarish mascots of liberalism, all women: Pelosi, Elizabeth Warren and Hillary Clinton. O’Connor absorbed all of this and still turned the race into a nail-biter."