adjective
- unbiased by personal interest or advantage; not influenced by selfish motives: a disinterested decision by the referee.
- not interested; indifferent.
noun
- absence of interest; indifference.
verb (used with object)
- to divest of interest or concern.
adjective
- free from bias or partiality; objective
- not interested
noun
- freedom from bias or involvement
- lack of interest; indifference
verb
- (tr) to free from concern for personal interests
1610s, “unconcerned,” the sense we now would ascribe to uninterested, with the sense of “impartial” going to disinteressed (c.1600). See dis- + interest. Modern sense of disinterested is first attested 1650s. As things now stand, disinterested means “free from personal bias,” while uninterested means “caring nothing for the matter in question.” Related: Disinterestedly; disinterestedness.