Architect discovered here undressed (7)
I believe the answer is:
founder
'architect' is the definition.
(thesaurus)
'discovered here undressed' is the wordplay.
'discovered' becomes 'found' (finding is a kind of discovering).
'undressed' says to take the centre (the word removes the letters which clothe it).
The middle letters of 'here' are 'er'.
'found'+'er'='FOUNDER'
(Other definitions for founder that I've seen before include "One who establishes an institution" , "Institution's former" , "(Of ship) fill with water and sink" , "Creator" , "Sink like originator?" .)