The term 'HIGH ON THE SCOVILLE SCALE' refers to a measure of the spiciness of a food. The two crossword solutions for this term are 'SPICY' (5 letters) and 'HOT' (3 letters). Both words refer to the same concept, but 'SPICY' is more specific and implies a higher level of spiciness than 'HOT'. The Scoville Scale is a measure of the amount of capsaicin, the chemical compound that gives chili peppers their heat, in a food. Foods with a high rating on the Scoville Scale are considered to be very SPICY.