Judged good, suede's used (7)
I believe the answer is:
guessed
'judged' is the definition.
('guess' can be a synonym of 'judge')
'good suede's used' is the wordplay.
'good' becomes 'g' (abbreviation).
'used' is an anagram indicator.
'suedes' with letters rearranged gives 'uessed'.
'g'+'uessed'='GUESSED'
(Other definitions for guessed that I've seen before include "Estimated, reckoned" , "took a shot" , "was a speculator" , "Surmised" , "Made estimate or hazarded opinion" .)