From Wiktionary, the free dictionary
From Late Proto-Vietic *kʰɔːʔ, from Middle Chinese 苦 (MC khuX) (SV: khổ). Cognate with Tho [Cuối Chăm] kʰɔː³. Doublet of khổ.
khó • (苦, 庫, 𧁷, 𧁹)
- difficult; tough
- (of a person) hard to get along with; hard to please
- (euphemistic) poor (not rich)
- (antonym(s) of “easy, simple”): dễ