Lived in twisted lascivious time (5)
I believe the answer is:
dwelt
'lived in' is the definition.
(I've seen this before)
'twisted lascivious time' is the wordplay.
'twisted' says the letters should be written in reverse.
'lascivious' becomes 'lewd' (synonyms).
'time' becomes 't' (abbreviation).
'lewd' backwards is 'dwel'.
'dwel'+'t'='DWELT'
(Other definitions for dwelt that I've seen before include "I dreamt I . . . in marble halls (song)" , "brooded" , "Spoke at length" , "Put much stress (on)" , "Lived, resided" .)