Silly, loud toilet revolts Marieke (9)

I believe the answer is:

foolhardy

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'silly' is the definition.
(thesaurus)

'loud toilet revolts marieke' is the wordplay.
'loud' becomes 'f' (short for forte - 'loud' in music).
'toilet' becomes 'loo' (loo can informally mean a toilet).
'revolts' says the letters should be written in reverse.
'marieke' becomes 'hardy' (I can't justify this - if you can you should believe this answer much more).
'loo' written backwards gives 'ool'.
'f'+'ool'+'hardy'='FOOLHARDY'

Can you help me to learn more?

(Other definitions for foolhardy that I've seen before include "Dry loofah for quality of rashness" , "Rash - incautious" , "daredevil" , "Hot-headed" , "Impulsive" .)

I've seen this clue in the Sydney Morning Herald.

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