Twisted of friend to dispose of a distinctive building (5)
I believe the answer is:
folly
'distinctive building' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'twisted of friend to dispose of a' is the wordplay.
'twisted' says the letters should be written in reverse.
'friend' becomes 'ally' (an ally is a friend or supporter).
'to dispose of' indicates named letters should be taken away.
'of' written backwards gives 'fo'.
'ally' with 'a' taken out is 'lly'.
'fo'+'lly'='FOLLY'
Can you help me to learn more?
(Other definitions for folly that I've seen before include "Stupidity - false building" , "Fatuity" , "'Madness, stupidity (5)'" , "mock Gothic building" , "Silliness - stupid mistake" .)