sensiblest
/ˈsɛnsɪbəlst/Definitions
1. adjective
most sensible; having the greatest sense or sound judgment
“He is considered the sensiblest person in the village when it comes to financial decisions.”
2. superlative of sensible
most capable of perceiving or noticing; having the greatest capacity for sensory perception
“The sensiblest observer was able to spot the small detail in the painting that others had missed.”