also: ありゃあ · ありゃー
interjection
Casual interjection expressing surprise, realization, or mild shock. Often used when noticing something unexpected.
ありゃ、財布を忘れた。
Oh no, I forgot my wallet.
ありゃあ、もうこんな時間か。
Whoa, it's already this late?
conjunction
if there is; if (I/you) have
Colloquial contraction of あれば. Used in casual conditional expressions, often with a nuance of 'if there happens to be' or 'if available'.
時間がありゃ、ちょっと寄っていくよ。
If I have time, I'll drop by.
金がありゃ何でもできるってもんじゃない。
It's not like you can do anything just because you have money.