Adverb
tyrannically (comparative more tyrannically, superlative most tyrannically)
In a tyrannical manner
Were a language ever completely "grammatical" it would be a perfect engine of conceptual expression. Unfortunately, or luckily, no language is tyrannically consistent. All grammars leak. Edward Sapir
The Government have tyrannically destroyed, so far as the Parliament Bill is concerned, every real power which the Second Chamber possesses. They have in their own fashion imitated Cromwell, without either his excuses or his genius. Arthur Balfour