Stylish English support worker (7)
I believe the answer is:
elegant
'stylish' is the definition.
(thesaurus)
'english support worker' is the wordplay.
'english' becomes 'e' (abbreviation).
'support' becomes 'leg' (leg is a kind of support**).
'worker' becomes 'ant' (worker is a type of ant).
'e'+'leg'+'ant'='ELEGANT'
(Other definitions for elegant that I've seen before include "Well-turned" , "Fine" , "Modish" , "Debonair, stylishly dressed" , "Dignified and graceful" .)