No good to go for effort in English show (9)
I believe the answer is:
establish
'show' is the definition.
(I know that show can be written as establish)
'no good to go for effort in english' is the wordplay.
I cannot quite see how this works, but
'go' could be 'stab' (both can mean an attempt) and 'stab' is found within the answer.
'english' could be 'e' (abbreviation) and 'e' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for establish that I've seen before include "Found - this sable (anag)" , "Institute; set up" , "form" , "Set up on permanent basis, or show to be true" , "Set up or found" .)