英语词源字典 - 在线词源网站

disinterested (adj.)[disinterested 词源字典]: 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.[disinterested etymology, disinterested origin, 英语词源]