Deprecate :: Deprecate (v. t.) To pray against, as an evil; to seek to avert by prayer; to desire the removal of; to seek deliverance from; to express deep regret for; to disapprove of strongly..
Deprecation :: Deprecation (n.) The act of deprecating; a praying against evil; prayer that an evil may be removed or prevented; strong expression of disapprobation.
Deprecation :: Deprecation (n.) Entreaty for pardon; petitioning.