Good court official is well (6)
I believe the answer is:
gusher
'is well' is the definition.
(I've seen this before)
'good court official' is the wordplay.
'good' becomes 'g' (abbreviation).
'court official' becomes 'usher' (I've seen this before).
'g'+'usher'='GUSHER'
(Other definitions for gusher that I've seen before include "Freely-flowing oil well" , "one exuding enthusiasm" , "effusive type" , "one's over-effusive" , "sentimental sort?" .)