Revolted by appalling denim clothing infection (8)
I believe the answer is:
mutinied
'revolted' is the definition.
The definition and answer can be both to do with social activities as well as being past participle verbs.
Perhaps you can see an association between them that I can't see?
'appalling denim clothing infection' is the wordplay.
'appalling' indicates anagramming the letters (an appalling spelling of the letters).
'clothing' is an insertion indicator (some letters cover up or clothe others).
'infection' becomes 'uti' (I am not sure about this - if you are sure you should believe this answer much more).
'denim' anagrammed gives 'mnied'.
'mnied' placed around 'uti' is 'MUTINIED'.
'by' is the link.
Can you help me to learn more?