New to war, maybe (3)
I believe the answer is:
raw
'new to' is the definition.
(thesaurus)
'war maybe' is the wordplay.
'maybe' is an anagram indicator.
'war' anagrammed gives 'RAW'.
(Other definitions for raw that I've seen before include "Unpleasantly cold and damp" , "Uncooked or crude" , "Uncooked or sore" , "Callow" , "Not processed" .)