あいたたMeanings1interjectionouch; owA casual exclamation of sudden pain, similar to 'ouch' or 'ow' in English. Often used when bumping into something or experiencing a sharp, unexpected pain.あいたた!足あしをぶつけちゃった。Ouch! I bumped my foot.あいたたた、この傷きずはしみるなあ。Ow ow ow, this cut really stings.