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"Disinterested" = impartial, with no personal stake; "uninterested" = bored or not interested in something.
Side-by-side comparison
"Disinterested" means impartial: you have no personal stake in the outcome. It is a positive quality; a referee or a judge should be "disinterested".
We need a disinterested third party to mediate the dispute fairly.
A judge must remain disinterested, personal relationships with either party are grounds for recusal.
She offered disinterested advice because she had nothing to gain from the outcome.
"Uninterested" simply means something does not interest you or bores you. Do not confuse the two: one is about impartiality and the other is about lack of interest.
The students seemed completely uninterested in the lecture and kept checking their phones.
He was uninterested in sports and preferred spending his weekends reading.
She seemed uninterested in the job offer, so they moved on to the next candidate.
Common mistake
- •"I am disinterested in politics" technically means you are impartial about it, not that you do not care.
- •To say something does not interest you: "I am uninterested in politics".
- •In legal or formal contexts where impartiality matters, "disinterested" is the correct word.
Trick to remember it
- •"Dis-" in "disinterested" = without personal interest (impartial).
- •"Un-" in "uninterested" = not interested (bored, indifferent).
- •A judge should be "disinterested" (impartial).
- •A bored student is "uninterested".
Quick rule
- •"Disinterested" = impartial, no personal stake in the outcome.
- •"Uninterested" = bored, lacking interest in something.
Did you know?
This distinction is a classic battleground between English prescriptivists (who defend "correct" rules) and descriptivists (who document real English usage). The use of "disinterested" to mean "uninterested" has centuries of documentation. Samuel Johnson included it that way in his 1755 dictionary. The confusion is not a modern error: it is part of the natural evolution of language.
Practise what you learned
Exercise 1 · Pick the right one
She looked completely _____ during the lecture. She kept checking her phone.
Exercise 2 · Pick the right one
A judge must be completely _____ to decide a case fairly. They cannot have personal stakes.
Exercise 3 · Form the word
Related word pairs
'Sensible' means practical and reasonable; 'sensitive' means easily affected or hurt, in feelings or physically.
'Sympathetic' means understanding and caring about someone's troubles; it does not mean friendly. 'Nice' is the word for pleasant and friendly.
"Above" is at a higher level without contact; "over" implies covering, movement, or crossing.
'Currently' means 'at the present time'; 'actually' means 'in reality', not 'nowadays'.
Bryan López
Founder of SpeakUP Academy