autocratic

Of or pertaining to autocracy or to an autocrat; absolute; holding independent and arbitrary powers of government.

In recent years, the prime minister has become increasingly autocratic.

Within democracies, nationalist leaders with autocratic impulses – from outgoing President Jair Bolsonaro in Brazil to presidential hopeful Marine Le Pen in France – have seen defeats in recent months.

Of or pertaining to the manner of an autocrat.

Despite his lack of actual authority, his autocratic demeanour annoyed many of his colleagues.

Donna became autocratic the day Daniel born, and she realized she had absolute power over another human being.