Freedom of speech is blessing in disguise (8)
I believe the answer is:
glibness
'freedom of speech' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'blessing in disguise' is the wordplay.
'in disguise' is an anagram indicator.
'blessing' with letters rearranged gives 'GLIBNESS'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for glibness that I've seen before include "Blessing (anag) -- slickness of speech" , "Blessing (anag) - quality of a slick sales person" .)