锐不可当

Traditional form:

銳不可當

Pinyin (reading):

ruìbùkědāng

Definitions:

• unstoppable
• hard to hold back

Characters:

• 锐 - sharp, pointed; keen, acute
• 不 - no, not, un-; negative prefix
• 可 - may, can, -able; possibly
• 当 - appropriate, timely; to act, to serve; the sound of bells

Traditional characters:

• 銳 - sharp, pointed; keen, acute
• 不 - no, not, un-; negative prefix
• 可 - may, can, -able; possibly
• 當 - appropriate, timely; to act, to serve; the sound of bells