The term 'make a reduction' can be summarized by two crossword solutions: SIMMER (6 letters) and trimdown (8 letters). Simmering is a cooking technique that involves cooking food at a low temperature for an extended period of time, usually in liquid. This method of cooking helps to reduce the liquid, resulting in a thicker consistency. Trimdown is a phrase used to describe reducing something in size or amount. This could refer to anything from cutting down on expenses to losing weight. Both of these terms can be used to describe making a reduction.