• synonyms


noun Chiefly British.
  1. a year.
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Origin of twelvemonth

before 1050; Middle English twelfmoneth. See twelve, month
Related formstwelve·month·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for twelvemonth

Historical Examples of twelvemonth

  • I hope to see her the wife of Sir James within a twelvemonth.

    Lady Susan

    Jane Austen

  • Their old neighbours told me they had been gone to Martinique, about a twelvemonth.

    Ned Myers

    James Fenimore Cooper

  • For nearly a twelvemonth he had been a house-surgeon at the Hospital of La Pitie.

  • "Well, he has lasted more than a twelvemonth," replied Morin.

  • A twelvemonth has not yet passed since history seemed to want incident.

British Dictionary definitions for twelvemonth


  1. mainly British an archaic or dialect word for year
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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