Nearly set aside dodgy complaint (7)
I believe the answer is:
disease
'complaint' is the definition.
(I've seen this before)
'nearly set aside dodgy' is the wordplay.
'nearly' means to remove the last letter.
'dodgy' indicates an anagram.
'set' with its final letter taken off is 'se'.
'se'+'aside'='seaside'
'seaside' anagrammed gives 'DISEASE'.
(Other definitions for disease that I've seen before include "Illness, malady" , "22 [MALADY]" , "scurvy?" , "Sickness" , "Ailment, malady" .)