Yep
Yeah, Yes
expression
Wanna play Uno (うん)? Yep! 'Course I do. I always wanna play Uno.
うん is a casual way to say yes, or yeah, so you’d generally use it with friends and family, and in other informal situations.
うん、そうだよ
yep that's right
うん、いいよ
yeah go ahead
うん、オッケー
yep okay
うん、そうしよう!
Yep, let's do that!
うん、ごめん、ちがう。
Yeah, sorry, that's wrong.
うん、おいしい!
Yep, it's yummy!