Cut the fat is a phrase used to describe the process of reducing something in order to make it more efficient or effective. This can be done by reducing, dieting, trimming, or paring down whatever is being discussed. The crossword solutions for this phrase are 'REDUCE' (6 letters), 'DIET' (4 letters), 'TRIM' (4 letters), and 'PARE' (4 letters). All of these words refer to the same concept of cutting back on something in order to make it better.