Launch fragrance after midday (6)
I believe the answer is:
ascent
'launch' is the definition.
(eg a rocket ascending)
'fragrance after midday' is the wordplay.
'fragrance' becomes 'scent' (synonyms).
'after' is a charade indicator (letters next to each other).
'midday' becomes 'a' (I can't justify this - if you can you should give a lot more credence to this answer).
'scent' after 'a' is 'ASCENT'.
Can you help me to learn more?
(Other definitions for ascent that I've seen before include "Hill" , "Upward movement" , "progress" , "lift" , "The climbing of a peak" .)