哎 (āi) — (interjection) hey! (used to call someone's attention); (interjection) oh! / hey! (expressing surprise, realization, or mild disapproval)

Definition

哎 (āi) is a casual interjection used to call attention (like 喂 on the phone) and to react with surprise or mild objection. Unlike 哦 (oh, I see) it carries a touch of complaint or protest, not just realization.

interjection
hey! (used to call someone's attention)oh! / hey! (expressing surprise, realization, or mild disapproval)

Examples

  • 哎,。
    āi, Nǐ guò lái yí xià.
    Hey, come over here for a moment.
  • 哎,!
    āi, Yuán lái nǐ zài zhè lǐ!
    Oh, so you're here!
  • 哎,?
    āi, Nǐ zěn me néng zhè yàng shuō?
    Hey, how can you say that?

Origin

Sound + meaning
六书liùshū
形声xíngshēng

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
口口kǒumouth
Sound part声符shēngfú
艾
艾ài哎āi
Same sound today

哎 pairs 口 (mouth), showing it is a spoken exclamation, with 艾, which gives the sound.

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