semisoft adjective 1noun 1forms 1 adjective1 •Partially soft; partially melted. noun1 •(rare) Any semisoft variety of cheese.We had a selection of cheeses. From Ontario there was a ten-year-old cheddar made by prizewinning Maple Dale Cheese along with a couple of semisofts, one made from buffalo milk and the other, cow. — 2014 formssemisofts