Took after and reassembled as withdrawn (9)
I believe the answer is:
resembled
'took after' is the definition.
The answer and definition can be both to do with fundamental existence as well as being past participle verbs.
Perhaps there's an association between them I don't understand?
'reassembled as withdrawn' is the wordplay.
'withdrawn' suggests deleting specific letters.
'reassembled' with 'as' removed is 'RESEMBLED'.
'and' is the link.
Can you help me to learn more?
(Other definitions for resembled that I've seen before include "Favoured" , "Looked like" .)