bare one's teeth

bare one's teeth idiom
Also, show one's teeth. Indicate hostility and readiness to fight, as in His refusal to accept my offer made it clear I'd have to bare my teeth, or In this instance, calling in a lawyer is showing one's teeth. This figurative term transfers the snarl of a dog to human anger. It first was recorded as show one's teeth in 1615.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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