bully
definition
a person who uses strength or power to harm or intimidate others
example
The bully at school would often target younger students, using his size to intimidate them.
synonyms
tormentorcowardintimidator
word origin — The word 'bully' originated from the Dutch word 'boel,' meaning 'lover' or 'brother.' It evolved in the late 17th century to refer to someone who was a 'fine fellow' and later took on the meaning of a person who intimidates others.