Strongest negative connotations:
* Dictator: This is the most common synonym and implies a ruthless and absolute ruler.
* Tyrant: Similar to dictator, but emphasizing cruelty and oppression.
* Despot: This word is very similar to tyrant, but often implies a more decadent or self-indulgent ruler.
Less harsh, but still negative:
* Authoritarian: This emphasizes the ruler's strict control and suppression of dissent.
* Totalitarian: This implies a total control over all aspects of life, including politics, society, and culture.
More neutral:
* Absolute ruler: This simply describes a ruler with unlimited power.
* Sole ruler: This emphasizes that the ruler is the only one in charge.
Positive connotations (rare):
* Strongman: This term can sometimes be used in a positive sense, especially in times of crisis, but it often carries negative baggage.
Ultimately, the best synonym for autocrat depends on the context and the specific meaning you want to express.