Having its own means of propulsion that moves with it.

Addressed to oneself.

The conscious control of one's behaviour; self-command.

A person who administers self-medication.

Medication of oneself without professional advice in order to treat a real or imagined condition.

The state of being excessively pleased with oneself; smugness. / A feeling of fulfillment or contentment with respect to one's own accomplishments or situation.

Rule of a group of people by their own leaders as opposed to rule imposed by a foreign government or people.

Describing a device with seals that activate without special procedures. / Describing a container that is capable of automatically closing off leaks that form in it.

Containing multiple claims or ideas that are inherently in disagreement; of something or someone that contradicts itself

Able to provide for oneself independently of others; not needing external support. / (obsolete) Overconfident in one's own abilities; arrogant.