poltroon
🇺🇸
/pɑːlˈtruːn/
🇬🇧
/pɒlˈtruːn/
A person who is very afraid and does not have the courage to do things.
The bully called him a poltroon because he wouldn't fight back.
那个恶霸因为他不愿反击而称他为懦夫。