The term 'GET LUMPY' can be broken down into two crossword solutions: CLOT (4 letters) and CURDLE (6 letters). CLOT is a verb that means to form a thick mass of solid material, usually by the coagulation of liquid. CURDLE is also a verb that means to cause a liquid to thicken and form lumps, usually due to the addition of an acid or other substance. Together, these two words describe the process of a liquid becoming lumpy.