See more synonyms for oversleep on Thesaurus.com
verb (used without object), o·ver·slept, o·ver·sleep·ing.
  1. to sleep beyond the proper or intended time of waking: He overslept and missed his train.
verb (used with object), o·ver·slept, o·ver·sleep·ing.
  1. to sleep beyond (a certain hour): She had overslept her usual time of arising.
  2. to let (oneself) sleep past the hour of arising: Of all mornings to oversleep myself!

Origin of oversleep

Middle English word dating back to 1350–1400; see origin at over-, sleep
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for oversleep

hibernate, crash, languish

Examples from the Web for oversleep

Historical Examples of oversleep

British Dictionary definitions for oversleep


verb -sleeps, -sleeping or -slept
  1. (intr) to sleep beyond the intended time for getting up
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for oversleep

late 14c., from over- + sleep (v.). Related: Overslept; oversleeping. Old English had a noun oferslæp "too much sleep."

Online Etymology Dictionary, © 2010 Douglas Harper