Disinterested vs. Uninterested

Some grammar police insist that disinterested should only be used to mean “unbiased or neutral” and should not be used as a synonym for uninterested (“not interested”). Although the history of the usage of these words is actually more complicated, this distinction is actually a useful one to remember and follow.

a fair, disinterested judgment
have a disinterested observer monitor the fairness of the process

uninterested students snoring and drooling