Definition of "assert" []

To state or express positively; affirm: asserted his innocence. (verb-transitive)
To defend or maintain (one's rights, for example). (verb-transitive)
Assert oneself To act boldly or forcefully, especially in defending one's rights or stating an opinion. (idiom)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "assert" in a sentence

"Global warming is, after all, global, so if what you assert is true, there ought to occasionally be a trip over, for example, the trans-Siberian railway from Vladivostok to Moscow."
"What you assert is not a “fact” anymore than the election of “President-elect Huckabee” in 2008 was a “fact”."
"The same goes for whenever Dick Fuld has reemerged to again assert it was the government's fault, not his, that Lehman Brothers failed."

Words like "assert"

acquit affirm asserted asserting assertion assertional assertive

assertively asserts asseverate aver bear behave carry

comport conduct declare defend deport maintain posit

postulate pronounce protest vindicate