Source : Webster's Revised Unabridged Dictionary (1913)

Mutinous \Mu"ti*nous\, a. [See {Mutiny}.]
   Disposed to mutiny; in a state of mutiny; characterized by
   mutiny; seditious; insubordinate.

         The city was becoming mutinous.          --Macaulay.
   -- {Mu"ti*nous*ly}, adv. -- {Mu"ti*nous*ness}, n.

Source : WordNet®

mutinous
     adj 1: disposed to or in a state of mutiny; "the men became
            mutinous and insubordinate"
     2: consisting of or characterized by or inciting to mutiny;
        "mutinous acts"; "mutinous thoughts"; "a mutinous speech"