a bully
Examples
I do not at all have the mind of a bully... in my mind bullies are intolerant of contrary opinion, domineering and rather cowardly. I would hope that none of those terms could be fairly used in describing me.
A bully is not reasonable - he is persuaded only by threats.
The way to work with a bully is to take the ball and go home. First time, every time. When there's no ball, there's no game. Bullies hate that. So they'll either behave so they can play with you or they'll go bully someone else.
I suppose my critics will call that preaching, but I have got such a bully pulpit!
A bully is always a coward.
A bully is always a coward.