The term 'HOW DISGUSTING!' can be expressed in a variety of ways, using the crossword solutions YECCH (5 letters), ICK (3 letters), UGH (3 letters), EWW (3 letters), and EWWW (4 letters). Yecch is an expression of disgust or distaste, while ick and UGH are exclamations of revulsion. Eww and ewww are also expressions of disgust, with ewww being more emphatic than eww. All of these words are used to express feelings of revulsion or distaste, and when combined, they emphasize the sentiment of 'HOW DISGUSTING!'