uninterested

adjective

1. having or showing no feeling of interest; indifferent.
2. not personally concerned in something.

adjective

1. indifferent; unconcerned

adj.1640s, “unbiased,” from un- (1) “not” + past participle of interest. It later meant “disinterested” (1660s); sense of “unconcerned, indifferent” is recorded from 1771. This is the correct word for what often is miscalled disinterested.