κρεῖττον:

ἀγαθόςneut nom/acc/voc sg comp; masc/fem voc sg comp
κάρρωνneut nom/acc/voc sg comp; masc/fem voc sg comp
κράτιστοςneut nom/acc/voc sg comp; masc/fem voc sg comp
κρείσσωνneut nom/acc/voc sg comp; masc/fem voc sg comp