also: あれれ · あららら · あれれれ · あらららら · あれれれれ
oh?; huh?; what's this?; tsk tsk
Interjection expressing mild surprise, puzzlement, or noticing something amiss. Often used when encountering an unexpected situation or a minor problem. Can also convey light disapproval or a 'tsk tsk' feeling.
Oh-oh, I forgot my wallet.
あらら、また雨が降ってきた。
Huh, it's started raining again.