Something not working with English chap (4)
I believe the answer is:
dude
'chap' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe there's an association between them I don't understand?
'something not working with english' is the wordplay.
I cannot really see how this works, but
'english' could be 'e' (abbreviation as in OED) and 'e' is present in the answer.
'not working' could be 'dud' (I've seen this before) and 'dud' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for dude that I've seen before include "Level" , "US geezer" , "Man (American slang)" , "He's no cowboy" , "Stylish and confidant man" .)