Disquietive refers to something that causes discomfort or anxiety. Antonyms for the word include comforting, calming, peaceful, serene, soothing, tranquil, and relaxing. When something is comforting, it provides a sense of ease or relief. Calming suggests a reduction of emotional tension or stress. Peaceful is used to describe a lack of disturbance, violence or conflict. Serene implies a state of calmness and tranquility. Soothing means to make someone feel better, less agitated or less troubled. Finally, tranquil describes a peaceful, quiet, and restful state, free from agitation or disturbance.