tyrannical

1 exercising power or authority without interference by others a tyrannical ruler whose terrible reign was marked by unceasing violence Synonyms arbitrary, autocratic (also autocratical), czarist (also tsarist or tzarist), despotic, dictatorial, monocratic, absolute (also tyrannic), tyrannousRelated Words authoritarian, jackbooted, oppressive, totalitarian; antidemocratic, antirepublican; high-handed, magisterial; domineering, imperious, masterful; all-powerful, almighty, omnipotent; autonomous, self-governing, self-ruling, sovereign (also sovran); unconditional, unlimitedNear Antonyms circumscribed, restrained, restricted; constitutional, lawful; democratic, republicanAntonyms limited

2 fond of ordering people around even when he was still a toddler, he tended to be a tyrannical playmate Synonyms authoritarian, authoritative, autocratic (also autocratical), despotic, dictatorial, domineering, imperious, masterful, overbearing, peremptory, bossy (also tyrannic), tyrannousRelated Words arrogant, assumptive, disdainful, fastuous, haughty, highfalutin (also hifalutin), high-and-mighty, high-hat, huffy, important, lofty, lordly, overweening, presuming, presumptuous, pretentious, proud, self-asserting, supercilious, superior, toplofty (also toploftical), uppish, uppity; commanding, controlling, dictating, regimental; arbitrary, high-handed, imperial; directorial, magisterial; aggressive, assertive, self-assertive; imperative; conceited, narcissistic, pompous, vain; all-powerful, almighty, omnipotent; firm, sternNear Antonyms humble, meek, modest, unassuming; amenable, docile, obedient, tractable; indecisive, irresolute; acquiescent, compliant, passive, resigned, submissive, yielding