Makes an enemy of worker and worries deeply (11)
I believe the answer is:
antagonises
'makes an enemy' is the definition.
The answer and definition can be both to do with social activities as well as being verbs in their -s form.
Perhaps there's an association between them I don't understand?
'worker and worries deeply' is the wordplay.
'worker' becomes 'ant' (worker is a type of ant).
'and' is a charade indicator (letters next to each other).
'worries deeply' becomes 'agonises' (I can't justify this - if you can you should believe this answer much more).
'ant'+'agonises'='ANTAGONISES'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for antagonises that I've seen before include "creates 17 [ILL WILL]" , "Does not placate" .)