Disinterested means impartial or unbiased, not taking sides in a situation. A disinterested judge listens fairly to both parties in a dispute without favoring either one. A disinterested referee calls the game by the rules, even when their own child is playing on one of the teams.

This word often gets confused with uninterested, which means not caring or paying attention. But they're quite different. An uninterested judge would be bored and distracted. A disinterested judge is paying close attention but doesn't have a personal stake in the outcome.

Being disinterested is actually a sign of fairness and integrity. When your school picks someone to mediate a disagreement between two students, they choose someone disinterested, someone who isn't close friends with either person and can see the situation clearly. Scientists aim to be disinterested observers, looking at evidence without hoping for a particular result.

Think of it this way: if two friends are arguing about whose turn it is to pick the movie, a disinterested third friend can help resolve it fairly because they don't care which movie gets picked. They're interested enough to help, but they don't have a strong personal stake in the choice.