mu ‧ ti ‧ nous /ˈmjuːtənəs, ˈmjuːtɪnəs $ -tn-əs/ BrE AmE adjective
1 . written showing by your behaviour or appearance that you do not want to obey someone SYN rebellious :
There was a mutinous look in Rosie’s eyes.
2 . involved in a mutiny
—mutinously adverb