The practice of bettering oneself without relying on the assistance of others. / (law) An act of redressing or preventing a wrong by one's own actions rather than through legal proceedings.

That refers to itself or oneself. / (specifically) In a literary work: referring to the author or the author's other works.

Act or process of referring to itself or oneself.

Preoccupation with oneself to the exclusion of everything else.

(engineering) Able to advance when turned, while creating its own thread.

in full control of one's faculties, and having a firm belief in one's abilities; confident, assured and poised

Aware of oneself as an individual being. / Excessively conscious of one's appearance or behaviour. / Uncomfortably over-conscious of one's appearance or behaviour; socially ill at ease.

Satisfied with oneself, especially over-satisfied; smug; slightly arrogant.

Induction in a circuit caused by changes in the circuit itself.

(physics) Of an subatomic particle that is identical to its antiparticle; includes all gauge bosons except the charged W-boson and quarks.