yeah /jɛ(ə)/particle 3exclamation 1phrases 1 particle3 •(informal) yes, used to give a positive answer or to show that you agree—You wanna get pizza for dinner? —Yeah, all right. •(informal) Used to express acknowledgment of what was previously said.—You wanna get pizza for dinner? —Yeah, I think I'm gonna have leftovers instead. •(informal) Used to ascertain the continued attention of the listener.I was walking down the road, yeah, and you know what I saw, yeah? A dog wearing a dress! exclamation1 •Expressing joy, celebration, glee, etc.Yeah! We did it! Phrases with yeah yeah, yeahA sarcastic expression of disbelief.