dictator
This term carries a heavy negative connotation of tyranny and oppression when applied to political leaders. It suggests a regime where civil liberties are suspended and power is maintained through fear or force rather than consent.
In a social or professional context, the word is used hyperbolically to describe someone who is overly controlling or bossy. This usage shifts the focus from political sovereignty to personal temperament and interpersonal dominance.
Meanings
A ruler of a country who has total power and controls everything without any democratic restrictions.
The country suffered for decades under a brutal dictator.
A person who gives orders in an authoritative or domineering manner.
My boss is a complete dictator who expects everyone to follow his every whim.