Say something is true
To state officially and publicly that something is true or happening
She declared it was the best wine she had ever tasted.
To state firmly that something is true
She asserts that the boy stole money from her.
To state firmly and publicly that something is true
He affirmed he had been at home all evening.
To say that something is definitely true or correct
The police confirmed that the two politicians had been arrested.
To say something is true although it has not been proved
The medication claims that it can make you thin without dieting.
To say that something is true or that someone has done something illegal or wrong without giving proof
It was alleged that the mayor had accepted bribes.
When other people do not believe
To say firmly that something is true, even when other people do not believe you
She insisted on her innocence.
To keep saying that something is true, even if other people do not agree or do not believe it
SW: insist, claim
I still maintain my innocence.
To argue or say that something is true
SW: maintain, insist
I contended my client had never been near the scene of the crime.