Getting this could perhaps be seen as infra dig (13)
I believe the answer is:
understanding
'getting' is the definition.
(I've seen this before)
'this could perhaps be seen as infra dig' is the wordplay.
I cannot really see how this works, but
'be' could be 'stand' (standing is a kind of being) and 'stand' is present in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for understanding that I've seen before include "Getting" , "Discernment" , "Knowing" , "Compassion" , "compassionate" .)