Using more words than needed (7)
I believe the answer is:
verbose
'using more words than needed' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for verbose that I've seen before include "Garrulous" , "Observe (anag) -- long-winded" , "Circumlocutory" , "Boringly long-winded" , "Irritatingly long-winded" .)