カイ
こころよ.い
快, 忄, 夬, 大, 人
心
cheerful, pleasant, agreeable, comfortable
軽快(けいかい): (1) casual (e.g. dress); light; nimble; jaunty; rhythmical (e.g. melody) (2) taking a turn for the better; receding of symptoms
愉快(ゆかい): pleasant; happy
快い(こころよい): pleasant; agreeable
快晴(かいせい): clear weather; cloudless weather; good weather
快適(かいてき): pleasant; agreeable; comfortable
全快(ぜんかい): complete recovery of health