1. If you were on trial for murder, would you rather the judge were:
2. If you were giving a speech and you saw most of your audience yawning or nodding off or staring at their smart phones, would you conclude your audience was:
The answer to Question 1 is B, Disinterested. The answer to Question 1 is A, Uninterested.
Disinterested means unbiased
Uninterested means unconcerned, bored, distant, uninvolved, aloof. Exactly what you would not want in the audience to your speech.
Here’s the problem:
Increasingly, Disinterested has overtaken Uninterested as the universal word for unconcerned, bored, aloof, and for unbiased, unprejudiced, impartial, as in “He was disinterested in the magazine article.” In this example, it’s possible the person was taking a neutral, impartial stance on the magazine article, but it’s much more probable he was just bored by it.
Some dictionaries have given up and are now accepting disinterest and uninterest as meaning the same. Do not follow their lead! Stand up for precision in using the two words. Use Disinterested when you’re standing before a judge. Use Uninterested when you’re standing in front of a bored audience.
You’ll be a language pro amidst rank amateurs.