Word Origin & History
deprecationlate 15c., from M.Fr. deprécation, from L. deprecationem, from deprecari "plead in excuse, avert by prayer," lit. "to pray (something) away," from de- "away" + precari "pray." Sense of "show disapproval" is first attested 1610s.
deprecate1620s, "to pray against or for deliverance from," from L. deprecat-, pp. stem of deprecari "to pray (something) away" (see
deprecation). Meaning "to express disapproval" is from 1640s. Related: Deprecated, deprecating.