Engaging sidelight fully or partially? (10)
I believe the answer is:
delightful
'engaging' is the definition.
(thesaurus)
'sidelight fully or partially?' is the wordplay.
'partially?' says the answer is hidden in the clue (I've seen 'partially' mean this).
'DELIGHTFUL' is hidden within 'sidelight fully or'.
(Other definitions for delightful that I've seen before include "Pretty" , "Charming" , "Greatly pleasing" .)