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Jyutping jyu5 ngaam4
Pinyin yǔ yán

Definitions (Wiktionary)
  1. noun, informal
    "language cancer": inability to use clear and understandable language
    (syn.) 語言癌, 语言癌

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Jyutping jyu5 ngaam4
Pinyin yǔ ái

Definitions (粵典–words.hk)
  1. 名詞、潮語
    「​乳癌​」​嘅​諧​音​,​係​非正式​嘅​講​法​,​指​用字​不當​或​辭​不達意​,​亦​可以​指有​語病
    gramatically invalid or awkwardly worded sentence; a pun of 乳癌(jyu5 ngaam4)
    • 「去囉不如食飯今晚。」「講到一嚿嚿,生『語癌』啊你?」
      「去啰不如食饭今晚。」「讲到一嚿嚿,生『语癌』啊你?」
      "Have dinner tonight how about?" "What are you saying? Did your sentences get cancer?"
Examples (粵典–words.hk)
  1. Cantonese
    「去啰不如食饭今晚。」「讲到一嚿嚿,生『语癌』啊你?」
    「去囉不如食飯今晚。」「講到一嚿嚿,生『語癌』啊你?」
    • "Have dinner tonight how about?" "What are you saying? Did your sentences get cancer?"