The word "disconcerting" means something that causes anxiety or unease. Its antonyms are comforting, assuring, calming, soothing, pacifying, settling, and reassuring. If something is comforting, it makes you feel at ease and less anxious. Assuring refers to something that confirms or guarantees, leaving no room for uncertainty. Calming means to make one feel less worried or stressed. If something is soothing, it does not aggravate your calmness. Pacifying means making someone calm and reducing their anger or aggression. Something that is settling, puts your mind at rest, reducing your anxiety level. Lastly, reassuring means restoring confidence and trust in someone.