tyrant

 
Pronunciation: /ˈtʌɪr(ə)nt/

noun

  • 1a cruel and oppressive ruler: the tyrant was deposed by popular demonstrations
  • a person exercising power or control in a cruel, unreasonable, or arbitrary way: her father was a tyrant and a bully
  • (especially in ancient Greece) a ruler who seized absolute power without legal right.
  • 2a tyrant flycatcher.

Origin:

Middle English: from Old French, via Latin from Greek turannos

Spelling help

Remember that tyrant ends with -ant.