Translation of "Uncool" in Japanese

Are you going out in those clothes? How uncool!

そんな服で出掛けるの？なんだかカッコ悪いなあ。

- Going out with those clothes? They look kinda bad.
- Are you going out in those clothes? How uncool!

そんな服で出掛けるの？なんだかカッコ悪いなあ。

Hanging around really cool people too much isn’t great because it makes all the other ordinary people you’ve hung out with until then look uncool.

あんまりかっこいい人を知ると、それまで普通だった人がかっこ悪い人になっちゃうからよくない。