() — (interjection) ha! (expressing surprise, realization, or satisfaction); (onomatopoeia) ha (sound of laughter, often repeated)

Definition

哈 (hā) is the laugh-sound 'ha, ha-ha' (often repeated 哈哈) and a casual interjection for surprise or satisfaction — like 哦 and 哎 but tied to laughter or a cheerful reaction rather than realization.

interjection
ha! (expressing surprise, realization, or satisfaction)
onomatopoeia
ha (sound of laughter, often repeated)

Examples

  • hā, Yuán lái shì nǐ!
    Ha, it's you!
  • Tā tīng le xiào hua, hā hā dà xiào.
    He heard the joke and laughed loudly.
  • hā, Zhè ge bàn fǎ zhēn hǎo!
    Ha, this method is really good!

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
kǒumouth
Sound part声符shēngfú
The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

哈 uses 口 (mouth) to show a mouth-related idea, and 合 as a sound part. The shape of 合 may look like two open mouths, but that is likely by chance.

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