坚韧

Traditional form:

堅韌

Pinyin (reading):

jiānrèn

Definitions:

• tough and durable
• tenacious

Characters:

• 坚 - hard, strong; firm, resolute
• 韧 - tough, strong; pliable

Traditional characters:

• 堅 - hard, strong; firm, resolute
• 韌 - tough, strong; pliable