Behind one's back


Also found in: Idioms.
when one is absent; without one's knowledge; as, to ridicule a person behind his back.

See also: Back

References in classic literature ?
It is perfectly monstrous," he said, at last, "the way people go about nowadays saying things against one behind one's back that are absolutely and entirely true.
It is perfectly monstrous the way people go about, nowadays, saying things against one behind one's back that are absolutely and entirely true.