辛苦 (xīn kǔ) means “exhausting; hard; tough; arduous; to work hard; to go to a lot of trouble; hardship(s)”. It is an HSK 4 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
工作很辛苦。
Gōngzuò hěn xīnkǔ.
The work is hard.
Updated: 2026-05-27