Put so badly, study gets extended (9)
I believe the answer is:
outspread
'extended' is the definition.
('outspread' can be a synonym of 'extended')
'put so badly study' is the wordplay.
'badly' indicates anagramming the letters.
'study' becomes 'read' ('read' can be a synonym of 'study').
'put'+'so'='putso'
'putso' is an anagram of 'outsp'.
'outsp'+'read'='OUTSPREAD'
'gets' acts as a link.
(Other definitions for outspread that I've seen before include "Scattered" , "Wide apart" , "Fully extended" .)