艰巨

Traditional form:

艱鉅

Pinyin (reading):

jiānjù

Definitions:

• (of a task, mission or responsibility) extremely difficult; challenging; demanding

Characters:

• 艰 - difficult, hard; hardship
• 巨 - large, huge, gigantic; chief

Traditional characters:

• 艱 - difficult, hard; hardship
• 鉅 - steel, iron; great