Ragamuffin's discovered in church insensible (6)
I believe the answer is:
urchin
'ragamuffin's' is the definition.
(thesaurus)
'discovered in church insensible' is the wordplay.
'discovered' indicates a hidden word (remove the letters covering the answer in the clue).
'URCHIN' is hidden within 'in church insensible'.
(Other definitions for urchin that I've seen before include "Ragged mischief-maker" , "Poorly-dressed child" , "Marine invertebrate with spiny shells" , "poor mite" , "Hedgehog - ragamuffin" .)