The Collaborative International Dictionary of English v.0.48:

Reproachful \Re*proach"ful\ (-f?l), a.
   1. Expressing or containing reproach; upbraiding;
      opprobrious; abusive.
      [1913 Webster]

            The reproachful speeches . . .
            That he hath breathed in my dishonor here. --Shak.
      [1913 Webster]

   2. Occasioning or deserving reproach; shameful; base; as, a
      reproachful life.
      [1913 Webster]

   Syn: Opprobrious; contumelious; abusive; offensive;
        insulting; contemptuous; scornful; insolent; scurrilous;
        disreputable; discreditable; dishonorable; shameful;
        disgraceful; scandalous; base; vile; infamous.
        [1913 Webster] -- Re*proach"ful*ly (r?-pr?ch"f?l-l?),
        adv. -- Re*proach"ful*ness, n.
        [1913 Webster]

WordNet (r) 3.0 (2006):

reproachful
    adj 1: expressing reproof or reproach especially as a corrective
           [syn: admonitory, admonishing, reproachful,
           reproving]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "reproachful":
   abusive, admonitory, blackening, blameful, censorious,
   condemnatory, contemptuous, critical, damnatory, denunciatory,
   deprecative, deprecatory, depreciative, derisive, disapproving,
   disparaging, execrating, execrative, execratory, hypercritical,
   invective, inveighing, judgmental, objurgatory, priggish,
   reprobative, reviling, ridiculing, scoffing, scolding, upbraiding,
   vilifying, vituperative