Inexperienced and envious? (5)
I believe the answer is:
green
This clue is a double definition.
'inexperienced' is the first definition.
(similar in meaning)
'envious?' is the second definition.
(thesaurus)
'and' is the link.
(Other definitions for green that I've seen before include "Envious; naive" , "Unripe; environmentalist" , "Politician; fresh" , "Grassy enclosure, in a village say" , "one of eighteen" .)