Chosen by oneself; self-appointed.

The self-appointed elite. / A volunteer.

(countable) A voluntary exile; One who chooses to leave their homeland or community. / (uncountable) The state of voluntary exile; The condition of choosing to leave one's homeland or community.

To go into self-exile.

Alternative form of self-catheterization

The insertion of a catheter by oneself without the aid of a specialist.

present participle of sell down the river

Third-person singular simple present indicative form of self-isolate

present participle of self-isolate

simple past tense and past participle of self-isolate