The word "unshutting" refers to the act of opening or unlocking something that was previously closed or locked. Antonyms for "unshutting" would be words that describe the opposite action, such as "closing," "locking," "sealing," "shutting," or "blocking." These words represent the act of preventing access or closing off an area for security, privacy, or protection. While "unshutting" may connote an opening or welcoming feeling, its antonyms evoke a sense of prevention or restriction. In summary, antonyms for "unshutting" describe actions that involve closing or securing an object or space.