The term 'make turbid' refers to the process of making a liquid or substance cloudy or murky. To make turbid, one can use the crossword solutions ROIL (4 letters), BEDIM (5 letters), CLOUD (5 letters), BEMIRE (6 letters), OBSCURE (7 letters), and MUDDY (5 letters). ROIL means to stir up or agitate a liquid, BEDIM means to darken or dim, CLOUD means to make hazy or OBSCURE, BEMIRE means to soil or stain, OBSCURE means to make unclear or hard to understand, and MUDDY means to make dirty or turbid. All of these words refer to actions that can be taken to make a liquid or substance turbid.