Callous : showing or having an insensitive and cruel disregard for others.Confident : feeling or showing confidence in oneself or one's abilities or qualities.Sentimental : of or prompted by feelings of tenderness, sadness, or nostalgia.Sensitive : having or displaying a quick and delicate appreciation of others' feelings.Capable : having the ability, fitness, or quality necessary to do or achieve a specified thing.Antonym of Callous is Sensitive