The term 'not well-done' is used to describe food that has not been cooked thoroughly. The crossword solutions for this term are RARE (4 letters), POOR (4 letters), and PINK (4 letters). RARE means that the food has been cooked for a short amount of time, leaving it undercooked. POOR indicates that the food has not been cooked properly, resulting in an unsatisfactory taste. Lastly, PINK implies that the food has not been cooked long enough, leaving it with a pinkish hue.