すこい

devious; cunning

Word type: 

Standard: 

ずるがしこい

Standard kanji: 

狡賢い

Example: 

A: あの子、いっつもうちの宿題うつして、自分でいっこもせえへんねん。
B: すこいなあ。

A: She always copies my homework--I don't think she's ever done any by herself.
B: Quite a cheater, huh?

Commentary: 

This word has spread outside of Kansai, so you may hear it other places as well.

こすい and すこい have the same meaning.

This word has a weaker feeling than すっこい.

Also see こすい, こっすい, and すっこい