Is put out of business by scrupulous notions (6)
I believe the answer is:
ideals
'scrupulous notions' is the definition.
The definition and answer can be both related to thinking as well as being plural nouns.
Maybe you can see a link between them that I don't see?
'is put out of business' is the wordplay.
I cannot really understand how this works, but
'business' could be 'deal' and 'deal' is located in the answer.
'is' is within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'by' is the link.
Can you help me to learn more?
(Other definitions for ideals that I've seen before include "Bad ladies have high principles" , "Ladies (anag.)" , "Models of behaviour to aim for" , "Moral value" , "Standards to aim for" .)