Being sensible, reached deal after arrangement (5-6)
I believe the answer is:
clear-headed
'being sensible' is the definition.
Both the answer and definition are adjectives.
Perhaps they are linked in a way I don't understand?
'reached deal after arrangement' is the wordplay.
'after' is a charade indicator (letters next to each other).
'arrangement' indicates an anagram.
'reached'+'deal'='reacheddeal'
'reacheddeal' with letters rearranged gives 'CLEAR-HEADED'.
Can you help me to learn more?
(Other definitions for clear-headed that I've seen before include "Alert; logical" , "Mentally alert" , "Alert, thinking logically" .)