The Collaborative International Dictionary of English v.0.48:
Insubordination \In`sub*or`di*na"tion\, n. [Cf. F. insubordination.] The quality of being insubordinate; disobedience to lawful authority. [1913 Webster]WordNet (r) 3.0 (2006):
insubordination n 1: defiance of authority [ant: subordination] 2: an insubordinate act [syn: insubordination, rebelliousness]