See how verbose this could be (7)
I believe the answer is:
observe
'see' is the definition.
(I know this)
'verbose this could be' is the wordplay.
'this could be' is an anagram indicator.
'verbose' is an anagram of 'OBSERVE'.
'how' acts as a link.
(Other definitions for observe that I've seen before include "taking notice" , "monitor" , "Watch without intervening" , "Verbose (anag.)" , "Watch closely" .)