The term 'make untidy' can be expressed in a variety of ways, including DISARRANGE (10 letters), DISHEVEL (8 letters), MUSS (4 letters), MESS (4 letters), RUMPLE (6 letters), bedraggle (9 letters), and messup (6 letters). DISARRANGE means to put something in a state of disorder or confusion. DISHEVEL means to make untidy or disordered. MUSS means to make untidy or disordered. MESS means to make something dirty or untidy. RUMPLE means to make something wrinkled or disheveled. Bedraggle means to make something wet and disheveled. Messup means to make something untidy or disordered.