bully
bul-ly
noun
A person who habitually intimidates or harms weaker individuals, often repeatedly.
"The school bully stole his lunch money."
verb
To intimidate or harm a weaker person, often repeatedly or habitually.
"Don't let them bully you into doing it."
Thesaurus
Synonyms: hooligan, roughneck, yob, yobbo, rowdy, ruffian, tough, yobo, swagger, browbeat, keen, good