Meanings
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1
verb
to give a quick, sharp, high-pitched bark or cry
The terrier began to yap whenever anyone approached the gate.
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2
verb
to talk continuously in a loud, shrill, or irritating way
They yapped about office gossip throughout the journey.
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3
noun
a quick sharp bark, or a burst of shrill insistent talk
A sudden yap from the yard made everyone turn toward the gate.
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4
noun
the mouth, in informal or slang use
He opened his yap before he had considered the consequences.
Thesaurus
Etymology
An imitative English formation, recorded as a verb in the late sixteenth century, echoing a short sharp bark. The senses "talk noisily" and, later, the slang noun "mouth" developed from the same association with insistent sound.