The word 'blobbiest' means having the most blobs, and its antonyms would be 'slimmest,' 'thinnest,' and 'leanest.' 'Slimmest' refers to the state of being thin and slender, while 'thinnest' pertains to something that has the least thickness or of low density. 'Leanest' means having the least amount of fat as in lean meat. These antonyms are opposite in sense to the meaning of 'blobbiest' and can be used to describe something that is the opposite of being bulky or heavy. They are useful for describing types of food, clothes, and even people.