An absolute ruler; a sovereign unrestrained by law or constitution; a usurper of sovereignty.
Specifically, a monarch, or other ruler or master, who uses power to oppress his subjects; a person who exercises unlawful authority, or lawful authority in an unlawful manner; one who by taxation, injustice, or cruel punishment, or the demand of unreasonable services, imposes burdens and hardships on those under his control, which law and humanity do not authorize, or which the purposes of government do not require; a cruel master; an oppressor.
Any one of numerous species of American clamatorial birds belonging to the family Tyrannidae; -- called also tyrant bird.
To act like a tyrant; to play the tyrant; to tyrannical.
Rightful liberty is unobstructed action according to our will within limits drawn around us by the equal rights of others. I do not add 'within the limits of the law' because law is often but the tyrant's will, and always so when it violates the rights of the individual. Thomas Jefferson
How strangely will the Tools of a Tyrant pervert the plain Meaning of Words! Samuel Adams
A tyrant must put on the appearance of uncommon devotion to religion. Subjects are less apprehensive of illegal treatment from a ruler whom they consider god-fearing and pious. On the other hand, they do less easily move against him, believing that he has the gods on his side. Aristotle
This and no other is the root from which a tyrant springs; when he first appears he is a protector. Plato
A democracy which makes or even effectively prepares for modern, scientific war must necessarily cease to be democratic. No country can be really well prepared for modern war unless it is governed by a tyrant, at the head of a highly trained and perfectly obedient bureaucracy. Aldous Huxley
tyrant in Dutch is dwingeland, geweldenaar, tiran
tyrant in French is tyran
tyrant in German is Tyrann
tyrant in Italian is tiranno
tyrant in Latin is tyrannus
tyrant in Spanish is tirano
tyrant in Swedish is tyrann