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[uh-kuhs-tuh m] /əˈkʌs təm/
verb (used with object)
to familiarize by custom or use; habituate:
to accustom oneself to cold weather.
Origin of accustom
late Middle English
1425-75; late Middle English < Middle French acoustumer. See ac-, custom
Related forms
preaccustom, verb (used with object)
reaccustom, verb (used with object)
unaccustom, verb (used with object) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for accustom
  • In a digital age, the ubiquity of technological images may accustom people to the old-fashioned miracle of illusion in art.
  • To observe them, you must accustom them to your presence.
  • Photographs reveal horrors to which they also accustom viewers.
  • We must accustom ourselves to a high standard and to a strict judgment.
  • Before moving plants to the garden, harden them off to accustom them to outdoor conditions.
  • Do not accustom yourself to use big words for little matters.
  • Although they are more accustom to being around humans, they can still be stressed by close encounters.
  • At first they were herded carefully and driven into the enclosure every two hours in order to accustom them to being handled.
  • If you or your students are accustom to spreadsheets you can develop new and more expansive models.
  • To accustom the birds to the trap, scatter bait around and in the trap tying the bobs up and out of position.
British Dictionary definitions for accustom


(transitive) usually foll by to. to make (oneself) familiar (with) or used (to), as by practice, habit, or experience
Word Origin
C15: from Old French acostumer, from costumecustom
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 accustom

early 15c., from Old French acostumer (12c., Modern French accoutumer), from à "to" (see ad-) + costume (see costume (n.)). Related: Accustomed; accustoming.

Online Etymology Dictionary, © 2010 Douglas Harper
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