exaggeration; overstatement; saying too much
misstatement; slip of the tongue; gaffe
過言ではないと思う。
I don't think it is an exaggeration.
これは過言かもしれないが本気だ。
This may be an exaggeration, but I am serious.
彼が最高だと言っても過言ではない。
It is no exaggeration to say he is the best.