Somehow enduring, taking stance with awareness (13)
I believe the answer is:
understanding
'awareness' is the definition.
(thesaurus)
'somehow enduring' is the wordplay.
'somehow' becomes 'under' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'enduring' becomes 'standing' ('stand' can be a synonym of 'endure').
'under'+'standing'='UNDERSTANDING'
'taking stance with' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for understanding that I've seen before include "Discernment" , "Knowledge" , "Gathering" , "Knowing" , "Empathy" .)