mutinousPronunciation: /ˈmjuːtɪnəs/Translate mutinous | into German | into Italian Definition of mutinous adjective (of a soldier or sailor) refusing to obey the orders of a person in authority: mutinous soldiers occupied the radio station wilful or disobedient:Antoinette looked mutinous, but she obeyedDerivatives mutinously adverb Origin: late 16th century: from obsolete mutine 'rebellion' (see mutiny) + -ousmutinous in other Oxford dictionaries Definition of mutinous in the US English dictionary