as·​ser·​ta·​tion | \ ˌa-sər-ˈtā-shən How to pronounce assertation (audio) \
plural assertations

Definition of assertation

: the act of asserting or something that is asserted : assertion This crisis, which inspires repeated heartfelt assertations of Mr. Richburg's happiness to be an American …— William Finnegan, New York Times Book Review, 30 Mar. 1997 What I have said so far has not been an attempt to support my thesis but merely to explain what it is. Of course, a fuller understanding of an assertation may convince someone of its truth.— Clifford Williams, The Life of the Mind, 2002

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of assertation

circa 1535, in the meaning defined above

History and Etymology for assertation

borrowed from French & Medieval Latin; French assertation, borrowed from Medieval Latin assertātiōn-, assertātiō, from assertāre “to affirm, assert” (frequentative of Latin asserere “to lay claim to, allege, assert”) + Latin -tiōn-, -tiō, noun suffix

Keep scrolling for more

Learn More about assertation

Statistics for assertation

Look-up Popularity

Time Traveler for assertation

The first known use of assertation was circa 1535

See more words from the same year

Comments on assertation

What made you want to look up assertation? Please tell us where you read or heard it (including the quote, if possible).


to move with exaggerated bouncy motions

Get Word of the Day daily email!

Test Your Vocabulary

Finance Words Quiz

  • a-piggy-bank
  • The etymology of mortgage is related most closely to which two words?
Name That Thing

Test your visual vocabulary with our 10-question challenge!


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!