Nothing quite like this honoured lady! (4)
I believe the answer is:
dame
'nothing quite like this' is the definition.
The definition suggests a singular noun which matches the answer.
'honoured lady' is the wordplay.
'honoured' becomes 'd' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'lady' becomes 'Ame'.
'd'+'ame'='DAME'
Can you help me to learn more?
(Other definitions for dame that I've seen before include "Cross-dressing panto character" , "Man's panto role" , "Pantomime lady" , "She's played by a man in panto" , "Peeress" .)