One-dayer

noun, slang

noun, slang ·Uncommon ·College level

Definitions

Noun
  1. 1
    Any event lasting one day.

    "Is the conference going to be a one-dayer, or should we book a hotel room?"

  2. 2
    A one-day match. informal

Example

More examples

"Is the conference going to be a one-dayer, or should we book a hotel room?"

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