Bill harnesses psychic ability to foretell (7)
I believe the answer is:
bespeak
'foretell' is the definition.
The definition and answer can be both to do with communicating as well as being verbs in their base form.
Maybe you can see an association between them that I don't see?
'bill harnesses psychic ability' is the wordplay.
I cannot quite understand how this works, but
'bill' could be 'peak' (synonyms) and 'peak' is found within the answer.
The remaining letters 'bes' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'to' is the link.
Can you help me to learn more?
(Other definitions for bespeak that I've seen before include "Provide evidence" , "Bear witness" , "Apply for" .)