This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Of or relating to a tyrant or tyranny: a tyrannical government.

adj. Characteristic of a tyrant or tyranny; despotic and oppressive: a tyrannical supervisor.

adj. Of, or relating to tyranny or a tyrant.

adj. Despotic, oppressive or authoritarian.

Having the character of a tyrant; acting like a tyrant; despotic in rule or procedure; arbitrary; imperious; as, a tyrannical master.

Pertaining to or characteristic of a tyrant; unjustly severe in operation; oppressive: as, a tyrannical government; tyrannical actions.

Synonyms Domineering, severe, oppressive, galling, grinding. See despotism.

adj. characteristic of an absolute ruler or absolute rule; having absolute sovereignty

adj. marked by unjust severity or arbitrary behavior

"During the second dogwatch, that same evening, Wilde sought out the boatswain and carpenter, and complained to them of what he termed my tyrannical conduct, which, he represented to his two listeners, was of so grossly humiliating a character that it was calculated very seriously to detract from his influence with his followers."

undemocratic    domineering   

domineering    oppressive   

pendragonish    tyrannous    arbitrary    bossy   

botanical    electromechanical    mechanical    puritanical   

despotic    unjust    vindictive    corrupt    oppressive    cruel    capricious    inhuman    overbear    arrogant