Gothic building in which there's a lack of reflection (5)
I believe the answer is:
folly
This clue might be a double definition.
'gothic building in which there's a lack' is the first definition.
The answer and definition can be both related to thinking as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'reflection' is the second definition.
The answer and definition can be both human attributes as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'of' acts as a link.
Can you help me to learn more?
(Other definitions for folly that I've seen before include "'Madness, stupidity (5)'" , "Foolish thing" , "mock Gothic building" , "Fatuity" , "Silliness - stupid mistake" .)