- unbiased by personal interest or advantage; not influenced by selfish motives: a disinterested decision by the referee.
- not interested; indifferent.
- free from bias or partiality; objective
- not interested
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.