DEPRECATION
Dep`re*ca"tion, n. Etym: [L. deprecatio; cf. F. déprécation.]

1. The act of deprecating; a praying against evil; prayer that an evil may be removed or prevented; strong expression of disapprobation. Humble deprecation. Milton.

2. Entreaty for pardon; petitioning.

3. An imprecation or curse. [Obs.] Gilpin.

DEPRECATIVE
Dep"re*ca*tive, a. Etym: [L. deprecativus: cf. F. déprécatif.]

Defn: Serving to deprecate; deprecatory.
— Dep"re*ca*tive*ly, adv.

DEPRECATOR
Dep"re*ca`tor, n. Etym: [L.]

Defn: One who deprecates.

DEPRECATORY
Dep"re*ca*to*ry, a. Etym: [L. deprecatorius.]

Defn: Serving to deprecate; tending to remove or avert evil by
prayer; apologetic.
Humble and deprecatory letters. Bacon.