Dash back with English deal (5)
I believe the answer is:
'deal' is the definition.
'dash back with english' is the wordplay.
'dash' becomes 'd'art' (synonyms).
'back' says the letters should be written backwards.
'with english' becomes 'e' (abbreviation. I am not sure about the 'with' bit.).
'dart' in reverse letter order is 'trad'.
Can you help me to learn more?
(Other definitions for trade that I've seen before include "Commercial exchange of goods and services" , "Business - deal" , "Barter, do business" , "Deal - occupation" , "Dealing in goods" .)