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accustom

[uh-kuhs-tuh m]
verb (used with object)
  1. to familiarize by custom or use; habituate: to accustom oneself to cold weather.
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Origin of accustom

First recorded in 1425–75; late Middle English word from Middle French word acoustumer. See ac-, custom
Related formspre·ac·cus·tom, verb (used with object)re·ac·cus·tom, verb (used with object)un·ac·cus·tom, verb (used with object)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for re-accustom

accustom

verb
  1. (tr usually foll by to) to make (oneself) familiar (with) or used (to), as by practice, habit, or experience
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Word Origin for accustom

C15: from Old French acostumer, from costume custom
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 re-accustom

v.

also reaccustom, 1610s, from re- + accustom. Related: Reaccustomed; reaccustoming.

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accustom

v.

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

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Online Etymology Dictionary, © 2010 Douglas Harper