Dyslexic witch relies on this? (5,5)
I believe the answer is:
spell check
'relies on this?' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'dyslexic witch' is the wordplay.
I cannot quite understand how this works, but
'witch' could be 'spell' (spelling is a kind of witching) and 'spell' is found within the answer.
The remaining letters 'check' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for spell check that I've seen is " scrutinise document".)