1640s, "unbiased," from un- (1) "not" + past participle of interest (v.). It later meant "disinterested" (1660s); sense of "unconcerned, indifferent" is recorded from 1771. This is the correct word for what often is miscalled disinterested.
实用例句
1. Mrs Trollope was sublimely uninterested in what she herself wore.
特罗洛普夫人丝毫不在意自己穿什么衣服。来自柯林斯例句
2. Denis tried to look nonchalant and uninterested.
