Dis-arrangement is a state of disorder or disturbance. Antonyms for this word would be terms that describe an orderly, organized, and peaceful environment. These could include harmony, arrangement, orderliness, neatness, tidiness, friendliness, and peacefulness. A harmonious environment implies a place where everything is in sync, well-organized, and well-coordinated. Arrangement indicates a state where everything is in a system, and there is a clear plan for how things should be. Orderliness implies that everything is in its proper place, and there is a sense of control. Neatness is a term for a place where everything is tidy and clean, and there is no clutter. Tidiness implies that everything is in place, and there is no mess.