苦心 kǔ xīn

painstaking effort; to take a lot of trouble

Word data

HSK Not in HSK
Frequency 33613th word

Definitions

  1. 1. painstaking effort
  2. 2. to take a lot of trouble
  3. 3. laborious at pains

Characters

Character Meaning
苦 kǔ HSK 4
bitter; to suffer; hardship
心 xīn HSK 3
heart; mind; intention