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one-on-one
one-on-oneadjectiveconsisting of or involving direct individual competition, confrontation, or communication; person-to-person.
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one on one
one on oneA direct encounter between two persons, especially a conflict, as in The two department heads went one on one regarding shelf space. This slangy expression almost certainly comes from sports. It is commonly used to refer to a two-person basketball game, but is also applied to the interaction of two players on opposing teams in football, soccer, and similar team sports. [c. 1960]
one-on-one
Americanadjective
adverb
noun
idioms
adjective
Etymology
Origin of one-on-one
An Americanism dating back to 1965–70
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Ayton, often maligned for his inconsistent effort, has been a force in the postseason, averaging 11.8 points and 10.8 rebounds while often guarding Rockets All-Star Alperen Sengun one-on-one.
From Los Angeles Times • May 2, 2026
Because of that, I think City should get the ball to them as quickly as possible, because passes to their front players will help them find those one-on-one situations.
From BBC • Apr. 19, 2026
Karl had the perfect opportunity — a one-on-one interview.
From Salon • Apr. 17, 2026
Bee will learn about users through one-on-one conversations with them and uses those insights to find their most compatible matches on the platform.
From Barron's • Mar. 13, 2026
What he would not give to fight Malfoy one-on-one...
From "Harry Potter and the Half-Blood Prince" by J.K. Rowling
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.