1 definition by GuessWho?????????

An exclamation, often one of shock or surprise. Not to be confused with AI, aye, or ai, the Chinese word for love.

Probably originates from the Lord of the Rings fandom, where it is sometimes used by elves.
Person 1: My dog was poisoned.
Person 2: Ai!

Ai, that hurt!

Ai, this is bad.
by GuessWho????????? June 04, 2011

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