The word "un-kindly" is a negative term used to describe actions or behavior that are cruel, harsh, or unpleasant. Fortunately, there are several antonyms that can be used to describe positive actions and behavior. For instance, "kindly" is an antonym for "un-kindly" and refers to actions, words, or behavior that are gentle, considerate, and friendly. Another antonym for "un-kindly" is "gracious," which means showing kindness, courtesy, and good manners. Other antonyms for "un-kindly" include "compassionate," "humane," "empathetic," "decent," and "generous." Using these antonyms in place of "un-kindly" can help convey a more positive message and make communication more effective.