To display an angry, violent, and/or threatening reaction to or against something or someone, as does a dog or wolf when threatened. I will show my teeth to anyone who tries to take away my land. We seemed to be getting along just fine, but she suddenly showed her teeth when I brought up politics.

What does it mean to show teeth?

to show that you are capable of fighting or defending yourself.

What does it mean when someone says they want to see your teeth?

to show that you have power or authority and that you intend to use it. Synonyms and related words. To threaten. threaten.