“disinterested” vs. “uninterested”

Use "disinterested" for impartial — no personal stake in the outcome — and "uninterested" for bored or not curious; a disinterested judge can still be fully engaged, just unbiased.

The real distinction

The two words split along an axis most speakers no longer track: stake versus attention. "Disinterested" is about having no vested interest — no money, no bias, no personal outcome riding on the result — which is exactly why it's the correct word for judges, referees, and arbiters. "Uninterested" is about attention and engagement — whether someone finds a thing interesting at all. A judge can be thoroughly disinterested (no stake in who wins) while being completely absorbed in the trial, not uninterested (bored) in the slightest. Usage guides note that "disinterested" meaning "bored" shows up constantly in casual speech and has for over a century, but nearly every style guide, legal dictionary, and editor still treats the impartiality sense as the one worth preserving, precisely because there's no other single word that captures "no stake in the outcome" as cleanly. If you use "disinterested" to mean "bored" in formal writing, a careful reader may read it as a mistake even if you intended it colloquially — so the safer move is to reserve "disinterested" strictly for impartiality and let "uninterested" carry all the boredom. Legal writing offers the clearest illustration of why the distinction matters practically: a contract might require a "disinterested appraiser," meaning specifically someone with no financial stake in the property's value, and substituting "uninterested appraiser" would nonsensically suggest the appraiser doesn't care about doing the job at all. News style guides, including the AP Stylebook, explicitly flag the two as distinct and warn against using "disinterested" loosely to mean bored, precisely because precise legal and journalistic writing still leans on the original stake-based sense daily. Etiquette writing sometimes notes a third, older sense of "disinterested" as simply "not interested," documented in dictionaries going back centuries before the modern impartiality sense solidified, which is part of why the "bored" usage persists so stubbornly in casual speech even though most professional style guides now treat it as nonstandard.

Examples with “disinterested”

• The arbitrator remained disinterested throughout the salary dispute.
• We need a disinterested third party to review the contract.
• A disinterested observer noted flaws in both arguments.
• The committee sought disinterested experts with no financial ties to either company.
• As a disinterested mediator, she refused any fee tied to the outcome.
• The referee's disinterested ruling favored neither team.
• A truly disinterested juror has no relationship to either party.
• Historians value disinterested accounts written by outside observers.
• The auditor's disinterested review satisfied both parties in the dispute.
• A disinterested panel of judges scored every entry equally.
• The scientist remained disinterested in the funding source, focusing only on the data.

Examples with “uninterested”

• He seemed uninterested in the meeting from the first slide.
• The cat looked uninterested in the new toy.
• Uninterested students drifted off during the long lecture.
• She was uninterested in gossip and changed the subject.
• The buyer grew uninterested once he saw the price.
• He gave an uninterested shrug when asked about the game.
• Uninterested in politics, she skipped the debate entirely.
• The uninterested clerk barely looked up from his phone.
• Her uninterested tone made it clear she wanted to leave.
• The bored, uninterested crowd began checking their phones.
• He stayed uninterested even as the plot grew more dramatic.

Memory trick

Think of "disinterested" as "dis-invested" — no money or stake invested in the outcome, like a disinterested judge. "Uninterested" just means unenthused, the plain opposite of interested — no stake needed to explain it, just boredom.