bully
US /ˈbʊl.i/
UK /ˈbʊl.i/

1.
a person who uses strength or influence to harm or intimidate those who are weaker
:
•
The school has a strict policy against bullies.
•
He was known as the class bully.
1.
to use superior strength or influence to intimidate (someone), typically to force him or her to do what one wants
:
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Don't let him bully you into doing something you don't want to do.
•
He tried to bully his way to the front of the line.