Regarding what you say, is not one of the listeners
'of the listeners' is the definition.
The definition suggests a singular noun which matches the answer.
'regarding what you say is not one' is the wordplay.
I cannot quite see how this works, but
'regarding' could be 're' (re can mean regarding, concerning) and 're' is present in the answer.
'one' could be 'li' (I've seen this in other clues) and 'li' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
'of the listeners' is the definition.
The definition suggests a singular noun which matches the answer.
'regarding what you say is not one' is the wordplay.
I cannot quite see how this works, but
'regarding' could be 're' (re can mean regarding, concerning) and 're' is located in the answer.
'one' could be 'li' (I've seen this in other clues) and 'li' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for lip-reading that I've seen is " Interpretation by following mouth movements".)