tyrant noun
ADJ. cruel, great | petty Some of the prison officers were petty tyrants.
VERB + TYRANT overthrow
TYRANT + VERB rule sth The country had long been ruled by tyrants.
PREP. under a/the ~ The kings of Sparta would not serve under the tyrants of Syracuse.
You can also check other dicts: tyrant (English, 中文解释 ), wordnet sense, Collins Definition