Definitions
1.NounA usurper; one who gains power and rules extralegally, distinguished from kings elevated by election or succession.
2.NounAny monarch or governor.
3.NounA despot; a ruler who governs unjustly, cruelly, or harshly.
4.NounAny person who abuses the power of position or office to treat others unjustly, cruelly, or harshly.
5.NounA villain; a person or thing who uses strength or violence to treat others unjustly, cruelly, or harshly.
6.NounThe tyrant birds, members of the family Tyrannidae, which often fight or drive off other birds which approach their nests.
7.AdjectiveTyrannical, tyrannous; like, characteristic of, or in the manner of a tyrant.
8.VerbTo act like a tyrant; to be tyrannical.
9.VerbTo tyrannize.