Definition of kindest:
(adj) :
Having a benevolent, courteous, friendly, generous, gentle, liberal, sympathetic, or warm-hearted nature or disposition, marked by consideration for – and service to – others.
(adj) :
Affectionate.
(adj) :
Favorable.
(adj) :
Mild, gentle, forgiving
(adj) :
Gentle; tractable; easily governed.
(n) :
A type, race or category; a group of entities that have common characteristics such that they may be grouped together.