こりゃ

interjection

hey there; I say; see here

Casual interjection used to call attention or express mild surprise, often when noticing something or addressing someone informally. Derived from これは.

• こりゃ、何なにしてるんだ。

  Hey there, what are you doing?

• こりゃ、驚おどろいた。

  Well, I'm surprised!