Trader dismissed — needing to get healthier? (9)
I believe the answer is:
outfitter
'trader' is the definition.
(I've seen this before)
'dismissed needing to get healthier?' is the wordplay.
'dismissed' becomes 'out' (dismissed in cricket).
'needing to get' says to put letters next to each other.
'healthier?' becomes 'fitter' ('fit' can be a synonym of 'healthy').
'out'+'fitter'='OUTFITTER'
(Other definitions for outfitter that I've seen before include "Clothier" , "Trader" , "Person in shop" , "suiting, from him?" , "Supplier" .)