Niftier

4 clues
Finer
Cooler
Keener.
Comparatively cool
Similar answers:
Actiniform
Actoknife
Adamvinatieri
Aknife
Anif
Anifiwrotemycongressman
Armyknife
Armyuniform
Artier
Banduniform
Baseballuniform
Battier
Bennifer
Bittierpill
Bluntknife
Boloknife
Bombsniffingdog
Boniface
Bowieknife
Braniff