Deny working with English underprivileged (5)
I believe the answer is:
needy
'underprivileged' is the definition.
(thesaurus)
'deny working with english' is the wordplay.
'working with' indicates an anagram (working with the letters).
'english' becomes 'e' (abbreviation).
'deny' mixed up with 'e' can make 'NEEDY'.
(Other definitions for needy that I've seen before include "Poor; indigent" , "Poor; wanting affection" , "Wanting attention" , "Impoverished" , "Necessitous" .)