Convince that you'll give notice (5,2,5)
I believe the answer is:
leave no doubt
'convince that you'll' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'give notice' is the wordplay.
I cannot quite understand how this works, but
'give' could be 'leave' (leaving is a kind of giving) and 'leave' is located in the answer.
The remaining letters 'nodoubt' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
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