"Ill ease" is a negative term that refers to discomfort or unease. Its antonyms are words that describe the opposite feeling, such as comfort, ease, cheerfulness, relaxation, tranquility, and serenity. Comfort is a synonym of ease, which signifies a state of being physically or mentally relaxed. Cheerfulness refers to a happy and positive frame of mind, while relaxation means a state of being free from stress or tension. Tranquility and serenity are related to peace and calmness, with tranquility indicating a serene state of mind and serenity expressing an overall peacefulness. In summary, the antonyms for "ill ease" encompass a range of positive and uplifting emotions, feelings, and states of being.