Sleepunder

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A kind of playdate, similar to a sleepover, in which a child stays at their friend's house until relatively late and then returns home. neologism

    "In many households, it's lights out for the traditional sleepover. Instead, more families are opting for sleepunders - a surprisingly controversial phenomenon that has raised the eyebrows of some parenting experts even as sleep specialists rejoice."

Synonyms

All synonyms
lateover

Example

More examples

"In many households, it's lights out for the traditional sleepover. Instead, more families are opting for sleepunders - a surprisingly controversial phenomenon that has raised the eyebrows of some parenting experts even as sleep specialists rejoice."

Etymology

From sleepover, with "over" replaced with its antonym "under".

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