also: かげん
Used when someone says something that goes beyond the truth, often in negative constructions like 過言ではない (it is no exaggeration to say).
It is no exaggeration to say that he is a genius.
I think that's a bit of an overstatement.
misstatement; gaffe; slip of the tongue
Refers to an unintentional mistake in speech, such as saying something incorrect or inappropriate. Less common than the exaggeration sense.
His misstatement at the meeting became a problem.