Editor picked up on aspect to amuse (7)
I believe the answer is:
delight
'amuse' is the definition.
(thesaurus)
'editor picked up on aspect' is the wordplay.
'editor' becomes 'ed'.
'picked up' says the letters should be written in reverse.
'on' says to put letters next to each other.
'aspect' becomes 'light' (light is a kind of aspect**).
'ed' in reverse letter order is 'de'.
'de'+'light'='DELIGHT'
'to' is the link.
(Other definitions for delight that I've seen before include "Gladness" , "Felicity" , "See 5" , "Gladden" , "It could be Turkish" .)