One-and-done

noun, slang

noun, slang ·Moderate ·College level

Definitions

Noun
  1. 1
    Something that is completed or accomplished only once, never to be done again. idiomatic, informal
  2. 2
    A basketball player who plays college basketball for a single year and then declares for the NBA draft. slang

    "John Calipari's Kentucky squad was made up of one-and-done players."

  3. 3
    The act of a team making the postseason playoffs but losing the very first game played in it. US, informal
  4. 4
    A family in which the parents decide to have only one child.

Example

More examples

"John Calipari's Kentucky squad was made up of one-and-done players."

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.