The term DISARRANGE OR RUMPLE can be summarized by two crossword solutions: TOUSLE (6 letters) and MUSS (4 letters). TOUSLE is a verb meaning to disarrange or rumple, usually referring to hair. It is derived from the Middle English word tusselen, which means to shake or move about. MUSS is also a verb meaning to disarrange or rumple, but it is more commonly used to refer to clothing or bedding. It is derived from the Middle English word musen, which means to move or stir.