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Jyutping oi2
Pinyin ǎi

Definitions (Wiktionary)
  1. character, obsolete
    an immoral person
  2. character, obsolete
    a courtesy name
Definitions (Unihan)
  1. person of reprehensible morals
  2. immoral
  3. adulterer
  4. Cangjie Input
    GWJ

毐 [-]

Jyutping
Pinyin ǎi

Definitions (CC-CEDICT)
  1. see historical character Lao Ai 嫪毐
  2. by extension, person of reprehensible morals
  3. immoral
  4. adulterer