Source : Webster's Revised Unabridged Dictionary (1913)

Deprecate \Dep"re*cate\ (d[e^]p"r[-e]*k[=a]t), v. t. [imp. & p.
   p. {Deprecated} (-k[=a]`t[e^]d); p. pr. & vb. n.
   {Deprecating} (-k[=a]`t[i^]ng).] [L. deprecatus, p. p. of
   deprecari to avert by player, to deprecate; de- + precari to
   pray. See {Pray}.]
   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.

         His purpose was deprecated by all round him, and he was
         with difficulty induced to adandon it.   --Sir W.
                                                  Scott.

Source : WordNet®

deprecating
     adj : tending to diminish or disparage; "belittling comments";
           "managed a deprecating smile at the compliment";
           "deprecatory remarks about the book"; "a slighting
           remark" [syn: {belittling}, {deprecative}, {deprecatory},
            {depreciative}, {depreciatory}, {slighting}]