Unsettling means something that makes someone feel disturbed or uneasy. So, the antonyms for unsettling would be the opposite of making someone disturbed or uneasy. Comforting, calming, reassuring, and pacifying are some of the antonyms of unsettling. These words have the ability to not only relieve stress, but also provide a sense of stability and security. Comforting words or actions can make someone feel at ease and safe, while calming words can soothe someone's nerves. Reassuring words or statements can eliminate doubts and fears, and pacifying words can ease tensions and create harmony. These antonyms of unsettling can bring about a sense of peace and tranquility in someone's life.