gnash one's teeth

Express a strong emotion, usually rage, as in When Jonah found out he was not going to be promoted, he gnashed his teeth. This expression is actually redundant, since gnash means "to strike the teeth together." Edmund Spenser used it in The Faerie Queene (1590): "And both did gnash their teeth." [Late 1500s]

Common Names:

Name	Pronounced	Usage
Haleigh	HAY-lee	English (Modern)
Ciro	CHEE-ro (Italian), THEE-ro (Spanish), SEE-ro (Latin American Spanish)	Italian, Spanish
Karina	kah-REE-nah (Swedish, Polish, German, Russian), kə-REE-nə (English)	Swedish, Danish, Norwegian, Polish, German, Russian, English
Souta	so:-tah	Japanese
Gerel	-	Mongolian
Ealisaid	-	Manx