Trade in continent (5-7)
I believe the answer is:
potty-trained
'continent' is the definition.
(as opposed to incontinent)
'trade in' is the wordplay.
I cannot quite see how this works, but
'in' is present in the answer.
an anagram of 'trade' is 'traed' which is located in the left over letters.
The remaining letters 'potty' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
(Other definitions for potty-trained that I've seen before include "(Of small children) no longer dependent on nappies" , "Weaned off nappies" .)