It seems probable that the licentiousness ordinarily imputed to Sappho may be a calumny.

There's something even worse than calumny, it's truth.

The Gospels articulated a calumny that would be used for millennia to justify the slaughter of Jews.

But there also the herdsmen of Gerara strove against the herdsmen of Isaac, saying: It is our water. Wherefore he called the name of the well, on occasion of that which had happened, Calumny.