1, 2. Kingly, regal, royal refer to that which is closely associated with a king, or is suitable for one. What is kingly may either belong to a king, or be befitting, worthy of, or like a king: a kingly presence, appearance, graciousness. Regal is especially applied to the office of kingship or the outward manifestations of grandeur and majesty: regal authority, bearing, splendor, munificence. Royal is applied especially to what pertains to or is associated with the person of a monarch: the royal family, word, robes, salute; a royal residence.

Did you mean kindliness?