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Jyutping tim2 gau2
Pinyin tiǎn gǒu

Definitions (Wiktionary)
  1. noun, derogatory, neologism, slang
    one who undignifiedly pursues one's love towards someone who in no way reciprocates it; simp

舔狗 [--]

Jyutping
Pinyin tiǎn gǒu

Definitions (CC-CEDICT)
  1. (neologism c. 2018) (slang) simp; person who resorts to cringeworthy fawning behavior in pursuing sb who does not requite their affections