To encourage in dishonour is healthy (7)
I believe the answer is:
nourish
'to encourage' is the definition.
(I've seen this before)
'in dishonour is healthy' is the wordplay.
'in' says the answer is hidden in the clue.
'NOURISH' is hidden within 'dishonour is healthy'.
(Other definitions for nourish that I've seen before include "Foster or cherish, often with food" , "Nurture, sustain" , "Provide with food for growth" , "Feed, nurture" , "support" .)