one-on-one

See also: one on one

English

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one-on-one (not comparable)

(chiefly Canada, US, Australia) Involving direct communication or competition between two people.
- 1999, United States. Congress. Senate. Committee on the Judiciary. Subcommittee on Criminal Justice Oversight, The Clinton Justice Department's Refusal to Enforce the Law on Voluntary Confessions: Hearing, page 56:
  Such one-on-one “swearing contests” are routinely decided in favor of law enforcement officers, but in this case the district court sided with the accused bank robber.
(sports) Involving one attacker and one defender.
- 2011 September 24, David Ornstein, “Arsenal 3 - 0 Bolton”, in BBC Sport‎^[1], archived from the original on 28 November 2011:
  After several near misses, Van Persie finally reached three figures by turning in Walcott's cross before Jaaskelainen saved from Walcott when one-on-one.
- 2024 January 13, Callum Matthews, “Newcastle United 2-3 Manchester City”, in BBC Sport‎^[2], archived from the original on 11 October 2025:
  Swedish striker Isak was also foiled by Ortega in a one-on-one opportunity shortly before half-time. If converted, that may have put the game beyond City's reach.
(mathematics) bijective or injective

involving one attacker and one defender

one-on-one (not comparable)

In a one-on-one manner.
He was willing to go one-on-one with the District Attorney himself.

one-on-one (countable and uncountable, plural one-on-ones)

A contest involving only one player on each side, especially of an activity often involving teams.
Why don't we play a little one-on-one until the others show up.