Humiliate phoney English leader (5)
I believe the answer is:
shame
'humiliate' is the definition.
(I've seen this in another clue)
'phoney english leader' is the wordplay.
'phoney' becomes 'sham' (I've seen this before).
'leader' says to take the initial letters.
The first letter of 'english' is 'e'.
'sham'+'e'='SHAME'
(Other definitions for shame that I've seen before include "disgraceful" , "Disgrace, ignominy" , "Ignomony" , "Discredit - ignominy" , "Humiliation; dishonour" .)