Here's a breakdown:
* Mutinous is an adjective describing a person, group, or situation.
* Mutiny is the noun form, referring to an act of rebellion, especially by sailors against their officers.
Examples:
* "The crew was mutinous after months at sea without proper food or pay."
* "The prisoners staged a mutiny in an attempt to escape."
Synonyms:
* Rebellious
* Insubordinate
* Disobedient
* Defiant
Antonyms:
* Obedient
* Submissive
* Compliant
* Loyal