English river’s discharge (3)
I believe the answer is:
axe
'river's discharge' is the definition.
The definition and answer can be both related to change as well as being verbs in their base form.
Perhaps you can see a link between them that I can't see?
'english' is the wordplay.
I cannot quite understand how this works, but
'english' could be 'e' (abbreviation) and 'e' is found within the answer.
The remaining letters 'ax' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for axe that I've seen before include "Tool for cutting, chopping" , "Abandon project with chopping tool" , "Chopping tool; dismiss" , "can bring down plane" , "Sack with cleaver?" .)