Definition of "yeah" in English

particle

1. Yes.

   • —You wanna get pizza for dinner? —Yeah, all right.

2. Used to express acknowledgment of what was previously said.

   • —You wanna get pizza for dinner? —Yeah, I think I'm gonna have leftovers instead.

3. 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!

interjection

1. Expressing joy, celebration, glee, etc.

   • Yeah! We did it!

noun

1. Pronunciation spelling of year.