Rationality (6)
'rationality' is the definition.
(I know that rationality can be written as reason)
This is all the clue.
(Other definitions for reason that I've seen before include "Cause - logic" , "Logic and rationality" , "Justification; sanity" , "Cause; mind's power" , "Purpose" .)
'rationality' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sanity that I've seen before include "Balance of mind" , "State of having a healthy mind" , "Stay in (anag.)" , "Rational state" , "Rationality" .)