1. 
2. 
3. 
[syn: disgracefully, ingloriously, ignominiously, discreditably, shamefully, dishonorably, dishonourably]
The Collaborative International Dictionary of English v.0.48:
Dishonorable \Dis*hon"or*a*ble\, a. [Cf. F. d['e]shonorable.]
   1. Wanting in honor; not honorable; bringing or deserving
      dishonor; staining the character, and lessening the
      reputation; shameful; disgraceful; base.
      [1913 Webster]
   2. Wanting in honor or esteem; disesteemed.
      [1913 Webster]
            He that is dishonorable in riches, how much more in
            poverty!                              --Ecclus. x.
                                                  31.
      [1913 Webster]
            To find ourselves dishonorable graves. --Shak.
      -- Dis*hon"or*a*ble*ness, n. -- Dis*hon"or*a*bly, adv.
      [1913 Webster]
WordNet (r) 3.0 (2006):
dishonorably
    adv 1: in a dishonorable manner; "he acted dishonorably" [ant:
           honorably, uprightly]
    2: with dishonor; "he was dishonorably discharged" [ant:
       honorably, honourably]
    3: in a dishonorable manner or to a dishonorable degree; "his
       grades were disgracefully low" [syn: disgracefully,
       ingloriously, ignominiously, discreditably,
       shamefully, dishonorably, dishonourably]