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Jyutping tou3 gan6 fu4
Pinyin tào jìn hu

Definitions (Wiktionary)
  1. verb, derogatory
    to worm one's way into being friends with somebody; to cotton up; to chum up

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Jyutping tou3 gan6 fu4
Pinyin tào jìn hū

Definitions (CC-CEDICT)
  1. to worm one's way into being friends with sb (usually derogatory)
Definitions (Wiktionary)
  1. verb, derogatory
    to worm one's way into being friends with somebody; to cotton up; to chum up