After training I belong in base (7)
I believe the answer is:
ignoble
'base' is the definition.
(both can mean dishonourable or shameful)
'after training i belong' is the wordplay.
'after training' indicates an anagram (train can mean to shape or control).
'i'+'belong'='ibelong'
'ibelong' is an anagram of 'IGNOBLE'.
'in' acts as a link.
(Other definitions for ignoble that I've seen before include "in a lower category" , "Lacking dignity" , "'Dishonourable, mean (7)'" , "not in the top class" , "Humble; despicable" .)