Dont let one forget to shout a warning (4,2,4)
I believe the answer is:
call to mind
'dont let one forget' is the definition.
I can't tell whether this defines the answer.
'to shout a warning' is the wordplay.
I cannot quite see how this works, but
'to' is found in the answer.
'shout' could be 'call' (synonyms) and 'call' is located in the answer.
The remaining letters 'mind' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for call to mind that I've seen before include "Cause to be remembered" , "Remember" , "Recollect" .)