tyrant

American  

[tahy-ruhnt] / ˈtaɪ rənt /

noun

1. a sovereign or other ruler who uses power oppressively or unjustly.

   Synonyms:

   dictator, autocrat, despot

2. any person in a position of authority who exercises power oppressively or despotically.

3. a tyrannical or compulsory influence.

4. an absolute ruler, especially one in ancient Greece or Sicily.

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tyrant British  

/ ˈtaɪrənt /

noun

1. a person who governs oppressively, unjustly, and arbitrarily; despot

2. any person who exercises authority in a tyrannical manner

3. anything that exercises tyrannical influence

4. (esp in ancient Greece) a ruler whose authority lacked the sanction of law or custom; usurper

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Other Word Forms

• undertyrant noun

Etymology

Origin of tyrant

First recorded in 1250–1300; Middle English tirant, from Old French, earlier tiran (with the addition of t by association with -ant ( def. ) ), from Latin tyrannus, from Greek týrannos, of uncertain origin, perhaps Anatolian

Example Sentences

The newly identified species has been named Tyrannoroter heberti, which means Hebert's tyrant digger, in recognition of its discoverer, Brian Hebert.

From Science Daily • Feb. 11, 2026

A friendly guy who blunders into one scene looking for a bathroom turns out to be a tyrant responsible for some very bad things.

From Los Angeles Times • Feb. 4, 2026

They thought those who were in competing spheres of power would fight for their own prerogatives, but it’s clear that’s actually quite a rare occurrence when it comes to facing down a tyrant.

From Salon • Jan. 15, 2026

The author is a fan of this feminist hero but acknowledges that Rankin was a family tyrant with a short fuse.

From The Wall Street Journal • Nov. 28, 2025

“See? She needs something to brighten up her day, make her forget the plaid tyrant breathing down her neck.”

From "A Place at the Table" by Saadia Faruqi and Laura Shovan

Related Words

• autocrat
• bully
• despot
• dictator
• oppressor