Passionate drunk ranted (6)
I believe the answer is:
ardent
'passionate' is the definition.
(similar in meaning)
'drunk ranted' is the wordplay.
'drunk' indicates an anagram.
'ranted' is an anagram of 'ARDENT'.
(Other definitions for ardent that I've seen before include "Ranted, being impassioned" , "Fervid" , "Enthusiastic, eager" , "Zealous - ranted (anag)" , "Loving and fiery" .)