Get better, as I am to show without doubt (7)
I believe the answer is:
improve
'get better' is the definition.
(I've seen this in another clue)
'i am to show without doubt' is the wordplay.
I cannot quite understand how this works, but
'i' is found in the answer.
'show' could be 'prove' (proving is a kind of showing) and 'prove' is present in the answer.
A single letter 'm' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'as' is the link.
Can you help me to learn more?
(Other definitions for improve that I've seen before include "Make better in quality" , "Ameliorate" , "reform" , "Get or make better" , "Enhance" .)