The Collaborative International Dictionary of English v.0.48:

Disobedience \Dis`o*be"di*ence\, n.
   Neglect or refusal to obey; violation of a command or
   prohibition.
   [1913 Webster]

         He is undutiful to him other actions, and lives in open
         disobedience.                            --Tillotson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disobedience
    n 1: the failure to obey [syn: disobedience, noncompliance]
         [ant: abidance, compliance, conformation,
         conformity, obedience, obeisance]
    2: the trait of being unwilling to obey [ant: obedience]

The Devil's Dictionary (1881-1906):

DISOBEDIENCE, n.  The silver lining to the cloud of servitude.