Sticky fare perhaps reasonable (7)
I believe the answer is:
goodish
'reasonable' is the definition.
(I've seen this before)
'sticky fare perhaps' is the wordplay.
'sticky' becomes 'goo' (I've seen this before).
'fare perhaps' becomes 'dish' (I can't justify this - if you can you should believe this answer much more).
'goo'+'dish'='GOODISH'
Can you help me to learn more?
(Other definitions for goodish that I've seen before include "Quite acceptable" , "reasonable" .)