"You canker blossom!" 3 Shakespearean Insults


[uh-sur-shuh n] /əˈsɜr ʃən/
a positive statement or declaration, often without support or reason:
a mere assertion; an unwarranted assertion.
an act of asserting.
Origin of assertion
late Middle English
1375-1425; late Middle English assercion < Latin assertiōn- (stem of assertiō). See assert, -ion
Related forms
assertional, adjective
misassertion, noun
nonassertion, noun
overassertion, noun
reassertion, noun
superassertion, noun
1. claim, contention, allegation. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for assertion
  • But currently all I see is an unsubstantiated assertion.
  • Few contemporary data support the assertion that eyewitnesses are important in police investigations.
  • The final statement in the quote is simply a dogmatic assertion.
  • Their assertion is that 10% of Americans determine how the rest consume and live by chatting about their likes and dislikes.
  • This is possible, but certainly not definitively established by your assertion.
  • It was about my assertion that searching online was great, but that nothing beats face-to-face contacts.
  • In this way we experience, in our turn, the assertion of memory.
  • You are incorrect in your assertion regarding figures-of-speech.
  • In light of recent literary criticism, my assertion may seem wrongheaded.
  • The other assertion—that monetary expansion isn't doing anything—is wrong, or is at least premature.
British Dictionary definitions for assertion


a positive statement, usually made without an attempt at furnishing evidence
the act of asserting
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
Cite This Source
Word Origin and History for assertion

early 15c., assercioun, from Middle French assertion (14c.) or directly from Late Latin assertionem (nominative assertio), noun of action from past participle stem of Latin asserere "claim rights over something, state, maintain, affirm," from ad- "to" (see ad-) + serere "join" (see series). By "joining oneself" to a particular view, one "claimed" or "maintained" it.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
assertion in Technology

1. An expression which, if false, indicates an error. Assertions are used for debugging by catching can't happen errors.
2. In logic programming, a new fact or rule added to the database by the program at run time. This is an extralogical or impure feature of logic programming languages.

The Free On-line Dictionary of Computing, © Denis Howe 2010
Cite This Source

Word of the Day

Difficulty index for assertion

Some English speakers likely know this word

Word Value for assertion

Scrabble Words With Friends

Quotes with assertion