Auto

Autograph: A signature written by oneself.

• The root "auto" indicates that the signature is written by the person themself.

Autobiography: A written account of one's own life.

• The root "auto" suggests that the writer is writing about themselves.

Automobile: A self-propelled vehicle.

• The root "auto" indicates that the vehicle is self-driven.

Autocrat: A ruler with absolute power.

• The root "auto" suggests that this ruler has complete control over themselves and their domain.

Autonomy: Self-government or independence.

• The root "auto" indicates that this is a state of self-rule or self-governance.