刻苦

Traditional form:

刻苦

Pinyin (reading):

kèkǔ

Definitions:

• hardworking
• assiduous

Characters:

• 刻 - to carve, to engrave; a quarter hour; a moment
• 苦 - bitter; hardship, suffering

Traditional characters:

• 刻 - to carve, to engrave; a quarter hour; a moment
• 苦 - bitter; hardship, suffering