The term 'LESS FAT' can be summarized by two crossword solutions: 'LANKER' and 'LEANER'. Both words refer to having less fat, with 'LANKER' meaning thin and gaunt, and 'LEANER' meaning having less fat than usual. These words are often used in the context of food, where 'LANKER' is used to describe food that has been cooked for a long time and has lost its fat content, while 'LEANER' is used to describe food that has had some of its fat content removed.