Finding it beyond one, which is extraordinary (7)
I believe the answer is:
notable
'extraordinary' is the definition.
(thesaurus)
'finding it beyond one' is the wordplay.
I cannot really understand how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found within the answer.
'one' could be 'a' (a thing is one thing) and 'a' is located in the answer.
The remaining letters 'noble' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'which is' acts as a link.
Can you help me to learn more?
(Other definitions for notable that I've seen before include "Great" , "Worthy of remark" , "Big noise" , "Unusual" , "Worthy of attention, significant" .)