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[oh-ver-sleep] /ˌoʊ vərˈslip/
verb (used without object), overslept, oversleeping.
to sleep beyond the proper or intended time of waking:
He overslept and missed his train.
verb (used with object), overslept, oversleeping.
to sleep beyond (a certain hour):
She had overslept her usual time of arising.
to let (oneself) sleep past the hour of arising:
Of all mornings to oversleep myself!
Origin of oversleep
1350-1400; Middle English; see over-, sleep Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for oversleep
Historical Examples
  • At best it may be fitful and when they awake they fear to go to sleep again lest they oversleep.

    Psychotherapy James J. Walsh
  • Clemens was not in the best humor because I had allowed him to oversleep.

  • Am I not to have an atom of breakfast, because I just happened to oversleep myself?

    Springhaven R. D. Blackmore
  • Poor Junie would have to oversleep herself on Sunday, that was all.

    The Glimpses of the Moon Edith Wharton
  • As you may imagine, little Nabul did not oversleep the next morning.

  • There is always the possibility that they may oversleep themselves and fall into a dormant and inactive state.

  • Above all, you must not let me oversleep myself, for otherwise I shall be late in arriving at Granada.

    Tales from the Lands of Nuts and Grapes Charles Sellers and Others
  • His wish to oversleep and to remain with his usual sexual objects (that is, with masturbation) corresponds with his resistance.

    Dream Psychology Sigmund Freud
  • Last night I went to bed at ten and woke at nine this morning, feeling as if, from oversleep, my brain had stuck to my skull.

    The Sea-Gull Anton Checkov
  • Daisy Bell had half a mind to let her oversleep and lose a mark, then she really did love her too well.

    Helen Grant's Schooldays Amanda M. Douglas
British Dictionary definitions for oversleep


verb -sleeps, -sleeping, -slept
(intransitive) 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
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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
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