Etymology

Sino-Vietnamese word from 反背 (“to betray, to be unfaithful to”)

Pronunciation

• (Hà Nội) IPA^(key): [faːn˧˩ ˀɓoj˧ˀ˨ʔ]
• (Huế) IPA^(key): [faːŋ˧˩ ˀɓoj˨ˀ˨ʔ]
• (Hồ Chí Minh City) IPA^(key): [faːŋ˨˦ ˀɓoj˨ˀ˧ʔ]