Somebody with green soap in a lather (9)
I believe the answer is:
personage
'somebody' is the definition.
(I've seen this before)
'with green soap in a lather' is the wordplay.
'with' says to put letters next to each other.
'in a lather' indicates anagramming the letters (phrase meaning 'nervous or anxious').
'green'+'soap' is 'greensoap'.
'greensoap' is an anagram of 'PERSONAGE'.
(Other definitions for personage that I've seen before include "big noise, it's said" , "Luminary" , "(Important) individual" , "(Important) character" , "Somebody" .)