(biology) The characteristic of an organism that enables it to survive and reproduce better than other organisms in a population in a given environment; the basis for evolution by natural selection.

Hatred of oneself. / (sociology) Disrespect or disdain for one’s own demographic (but not necessarily oneself).

(intransitive, Britain, business) To become less by being sold. / (transitive, Britain, business) To reduce by selling.

(idiomatic) To betray a person; to conspire against someone for personal gain.

(computing, typography) A metacharacter in Unicode that selects one of a set of semantically equivalent glyphs.

plural of self-tapping screw

plural of self-selection

(economics, business, insurance) The process by which the price and quantity of goods or services in a given market is altered due to one party having information that the other party cannot have at reasonable cost.

Alternative spelling of hard sell

(construction) A fastener that taps and drills its own hole during application.