Somehow teaches it to be pleasing (9)
I believe the answer is:
aesthetic
'be pleasing' is the definition.
(synonyms)
'somehow teaches it' is the wordplay.
'somehow' is an anagram indicator.
'teaches'+'it'='teachesit'
'teachesit' with letters rearranged gives 'AESTHETIC'.
'to' is the link.
(Other definitions for aesthetic that I've seen before include "Of pleasing appearance" , "Concerned with the appreciation of beauty" .)