Don't argue (5)
I believe the answer is:
agree
This could be a double definition.
'don't' is the first definition.
Both the definition and answer are verbs in their base form.
Perhaps you can see an association between them that I can't see?
'argue' is the second definition.
The answer and definition can be both to do with communicating as well as being verbs in their base form.
Perhaps there's a link between them I don't understand?
Can you help me to learn more?
(Other definitions for agree that I've seen before include "confess?" , "Match; tally" , "Hold the same view" , "Have the same opinion" , "Allow" .)