Argue logically (6)
I believe the answer is:
reason
(Other definitions for reason that I've seen before include "The right exercise of the mind" , "Justification or motive" , "Cause; think logically" , "Cause, justification" , "Defence" .)
I believe the answer is:
reason
(Other definitions for reason that I've seen before include "The right exercise of the mind" , "Justification or motive" , "Cause; think logically" , "Cause, justification" , "Defence" .)