assertion in a sentence

Definition

Assertion: a confident and forceful statement of fact or belief.

Her assertion that the project would be completed on time was met with skepticism.
The lawyer's assertion of his client's innocence was compelling yet controversial.
Despite the evidence presented, his assertion remained unchallenged by the opposing team.
The scientist made an assertion about climate change that sparked intense debate.
Her assertion that she had never been to Paris surprised her friends.
He backed his assertion with detailed research and expert testimony.
The professor's assertion about the historical event changed the way students viewed it.
An assertion without evidence is often regarded as mere opinion.
The politician's bold assertion aimed to rally support from the electorate.
In her essay, she made a strong assertion regarding the importance of education reform.