戴綠帽子 [－绿－－]

Jyutping daai3 luk6 mou2 zi2
Pinyin dài lǜ mào zi

Definitions (CC-CEDICT)
  1. to have been cheated on by one's partner (formerly meant "to be a cuckold", i.e. applied to men only)
Definitions (Wiktionary)
  1. verb, idiomatic, slang, verb-object
    to be cuckolded; to have one's wife or girlfriend cheat on one
  2. verb, idiomatic, slang, verb-object
    to cuckold another person