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Jyutping nei6 waai1
Pinyin nì wai

Definitions (CC-CEDICT)
  1. (of a couple) to be sweet to each other
  2. lovey-dovey
  3. variant of 膩味|腻味[ni4 wei5]
Definitions (Wiktionary)
  1. adj, Mandarin, colloquial, dialectal, of a person's personality
    indecisive; irresolute; weak; annoying
  2. adj, Mandarin, colloquial, dialectal
    nauseated (owing to prolonged exposure to something); sickened
  3. verb, Mandarin, colloquial, dialectal
    to loathe; to hate; to feel disgusted
  4. verb, Mandarin, colloquial, derogatory, dialectal, of a couple
    to do something intimate in a nauseating manner; to be lovey-dovey
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    每天都这样地吃生鱼片真是太腻歪了。
    每天都這樣地吃生魚片真是太膩歪了。
    měi tiān dōu zhè yàng dì chī shēng yú piàn zhēn shi tài nì wai le 。
    • If you eat it every day like this, then you become tired even of sashimi.