One’s contacts outside for the mutinies (7)
I believe the answer is:
risings
'the mutinies' is the definition.
The answer and definition can be both acts as well as being plural nouns.
Perhaps you can see a link between them that I don't see?
'one's contacts outside' is the wordplay.
'one's' becomes 'i's' (Roman numeral).
'contacts' becomes 'rings' (I can't justify this - if you can you should give a lot more credence to this answer).
'outside' indicates putting letters inside (some letters go outside others).
'is' inserted into 'rings' is 'RISINGS'.
'for' is the link.
Can you help me to learn more?
(Another definition for risings that I've seen is " rebellious actions".)