The Collaborative International Dictionary of English v.0.48:

Ingloriously \In*glo"ri*ous*ly\, adv.
   In an inglorious manner; dishonorably; with shame;
   ignominiously; obscurely.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ingloriously
    adv 1: in a dishonorable manner or to a dishonorable degree;
           "his grades were disgracefully low" [syn:
           disgracefully, ingloriously, ignominiously,
           discreditably, shamefully, dishonorably,
           dishonourably]