• synonyms


[as-i-doo-i-tee, -dyoo-]
See more synonyms for assiduity on Thesaurus.com
noun, plural as·si·du·i·ties.
  1. constant or close application or effort; diligence; industry.
  2. assiduities, devoted or solicitous attentions.
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Origin of assiduity

From the Latin word assiduitās, dating back to 1595–1605. See assiduous, -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

attentiveness, attention, effort, industry, industriousness, doggedness, concentration, assiduousness, persistence, care

Examples from the Web for assiduity

Contemporary Examples

Historical Examples

  • His tutors always praised him for his assiduity and the trouble he took.

  • Moreover, it is the one mankind, if it could, would cultivate with the most assiduity.

  • But I am more obliged to you for your kindness and assiduity, than I am to him only for thinking of it.


    William Godwin

  • Mademoiselle Heinzleman's great test of all goodness was assiduity.

    Luttrell Of Arran

    Charles James Lever

  • Margarita had contrived to gain my interest by the assiduity of her attentions.

    The Memoires of Casanova, Complete

    Jacques Casanova de Seingalt

British Dictionary definitions for assiduity


noun plural -ties
  1. constant and close application
  2. (often plural) devoted attention
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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

Word Origin and History for assiduity


early 15c., from Latin assiduatem "continual presence," noun of quality from past participle stem of assiduus (see assiduous).

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Online Etymology Dictionary, © 2010 Douglas Harper