The voluntary destruction of something by itself.

Causing injury to oneself or harm to one's interests.

(usually figuratively) To destroy oneself. / To destroy or greatly damage one's position in a game, in one's work or career, in one's financial or social position, etc.

simple past tense and past participle of self-destruct

present participle of self-destruct

The state or tendency of being self-destructive.

plural of self-destruction

In a self-destructive manner.

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