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[kri-puhs-kyuh-ler] /krɪˈpʌs kyə lər/
of, relating to, or resembling twilight; dim; indistinct.
Zoology. appearing or active in the twilight, as certain bats and insects.
Origin of crepuscular
First recorded in 1660-70; crepuscule + -ar1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for crepuscular
Contemporary Examples
Historical Examples
  • Through the crepuscular whiteness the trees hung in blotted masses.

    The Reef Edith Wharton
  • It is blended twilight of intellect and sensation; it is the crepuscular of thought.

  • She lay white, and as if suspended, in the crepuscular atmosphere of sunset mingling with the ashy gleam of the vast anchorage.

    Within the Tides Joseph Conrad
  • Some species of foxes, however, are twilight prowlers, and one or two of the fennecs are also crepuscular.

    The Young Yagers Mayne Reid
  • crepuscular, kre-pus′kū-lar, adj. of or pertaining to twilight—also Crepus′culous.

  • When my eyes unclosed the chamber of the moonstone walls was filled with a silvery, crepuscular light.

    The Metal Monster A. Merritt
  • Rabbits and hares are crepuscular and possibly more nocturnal than diurnal.

  • There is little need to dwell upon these crepuscular stirrings of popular Latin poetry in the earlier Middle Ages.

  • Some of the people went, and others came, with brief devoirs to Mrs. Maybough in the crepuscular corner where she sat.

    The Coast of Bohemia William Dean Howells
British Dictionary definitions for crepuscular


of or like twilight; dim
(of certain insects, birds, and other animals) active at twilight or just before dawn
Word Origin
C17: from Latin crepusculum dusk, from creper dark
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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Contemporary definitions for crepuscular

appearing or active at twilight

Word Origin

Latin crepusculum

Usage Note

zoology's 21st Century Lexicon
Copyright © 2003-2014, LLC
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Word Origin and History for crepuscular

figurative use from 1660s; literal use from 1755, from Latin crepusculum "twilight, dusk," from creper "dusky," of unknown origin. Especially of evening twilight.

Online Etymology Dictionary, © 2010 Douglas Harper
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