The Collaborative International Dictionary of English v.0.48:

Disobey \Dis`o*bey"\, v. t. [imp. & p. p. Disobeyed; p. pr. &
   vb. n. Disobeying.] [F. d['e]sob['e]ir; pref. d['e]s- (L.
   dis-) + ob['e]ir. See Obey, and cf. Disobedient.]
   Not to obey; to neglect or refuse to obey (a superior or his
   commands, the laws, etc.); to transgress the commands of (one
   in authority); to violate, as an order; as, refractory
   children disobey their parents; men disobey their Maker and
   the laws.
   [1913 Webster]

         Not to disobey her lord's behest.        --Tennyson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Disobey \Dis`o*bey"\, v. i.
   To refuse or neglect to obey; to violate commands; to be
   disobedient.
   [1913 Webster]

         He durst not know how to disobey.        --Sir P.
                                                  Sidney.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disobey
    v 1: refuse to go along with; refuse to follow; be disobedient;
         "He disobeyed his supervisor and was fired" [ant: obey]

Moby Thesaurus II by Grady Ward, 1.0:

30 Moby Thesaurus words for "disobey":
   break, break the law, care naught for, contravene, defy, disregard,
   flout, go counter to, ignore, infringe, mutiny, not conform,
   not heed, not keep, not listen, not mind, not observe, oppose,
   overstep, rebel, refuse to cooperate, resist, revolt, scoff at,
   set at defiance, set at naught, set naught by, strike, transgress,
   violate



The Devil's Dictionary (1881-1906):

DISOBEY, v.t.  To celebrate with an appropriate ceremony the maturity
of a command.

    His right to govern me is clear as day,
    My duty manifest to disobey;
    And if that fit observance e'er I shut
    May I and duty be alike undone.
                                                         Israfel Brown