Madness appearing without Suggs's ultimate folly (7)
I believe the answer is:
inanity
'folly' is the definition.
(I've seen this in another clue)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for inanity that I've seen before include "Folly" , "Silliness in a tiny way" , "act of stupidity" , "Senselessness - frivolous utterance" , "Mindlessness" .)