Kookiest

3 clues
Most bonkers
Most offbeat
Most eccentric
Similar answers:
Achiest
Adlaiestevenson
Aeriest
Afternoonsiesta
Airiest
Alamofiesta
Angriest
Antsiest
Apriest
Apriestarabbiandamonk
Ariestruck
Artiest
Artsiest
Ashiest
Attheearliest
Baggiest
Baggiestaggies
Balmiest
Barmiestarmies
Battiest