- slumber (n.)
- mid-14c., from slumber (v.). Slumber party first recorded 1942.
- slumber (v.)
- mid-14c., alteration of slumeren (early 13c.), frequentative form of slumen "to doze," probably from Old English sluma "light sleep" (cf. Middle Dutch slumen, Dutch sluimeren, German schlummern "to slumber"). Frequentative on the notion of "intermittent light sleep." Related: Slumbered; slumbering.