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assurance

[uh-shoo r-uh ns, -shur-]
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noun
  1. a positive declaration intended to give confidence: He received assurances of support for the project.
  2. promise or pledge; guaranty; surety: He gave his assurance that the job would be done.
  3. full confidence; freedom from doubt; certainty: to act in the assurance of success.
  4. freedom from timidity; self-confidence; belief in one's abilities: She acted with speed and assurance.
  5. presumptuous boldness; impudence.
  6. Chiefly British. insurance.

Origin of assurance

1325–75; Middle English ass(e)ura(u)nce < Middle French ass(e)urance. See assure, -ance
Related formspre·as·sur·ance, noun
Can be confusedassurance insurance

Synonyms

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2. warranty, oath. 5. effrontery, impertinence, nerve, cheek.

Synonym study

3. See trust. 4. See confidence.

Antonyms

3–5. uncertainty.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for assurance

assurance

noun
  1. a statement, assertion, etc, intended to inspire confidence or give encouragementshe was helped by his assurance that she would cope
  2. a promise or pledge of supporthe gave an assurance of help when needed
  3. freedom from doubt; certaintyhis assurance about his own superiority infuriated her
  4. forwardness; impudence
  5. mainly British insurance providing for certainties such as death as contrasted with fire or theft
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 assurance

n.

late 14c., "formal or solemn pledge, promise," also "certainty," from Old French asseurance (11c., Modern French assurance) "assurance, promise; truce; certainty, safety, security," from asseurer (see assure). The word had a negative tinge 18c., often suggesting impudence or presumption.

Online Etymology Dictionary, © 2010 Douglas Harper