Strangely put into uncommon ecstasy (7)
I believe the answer is:
rapture
'ecstasy' is the definition.
('rapture' can be a synonym of 'ecstasy')
'strangely put into uncommon' is the wordplay.
'strangely' indicates anagramming the letters.
'into' means one lot of letters goes inside another.
'uncommon' becomes 'rare' ('rare' can be similar in meaning to 'uncommon').
'put' is an anagram of 'ptu'.
'ptu' inserted within 'rare' is 'RAPTURE'.
(Other definitions for rapture that I've seen before include "Bliss, intense delight" , "modified for Nanki-Poo?" , "Intense joy" , "Transports of delight" , "State of bliss and euphoria" .)