Comparing

Joe Mary Fred 50 25 85  (adjective)+"er" than  the (adjective)+"est" Joe is older than Mary. Mary is younger than Fred  (adjective)+"er" than Fred is the oldest. Mary is the youngest.  the (adjective)+"est" Mary is not as old as Fred Joe is twice as old as Mary.  as (adjective) as

Joe Mary Fred 5' 10'' 6' 1'' 5' 2'' Joe is taller than Fred. Joe isn't as tall as Mary. . . . .

Joe Mary Fred 200 130 105 y  i + "er" t  tt + "er" Joe is heavier than Mary. Fred is skinnier than Mary y  i + "er" Fred is the skinniest. Joe is the heaviest. Joe is fatter than Mary. t  tt + "er"

Joe Mary Fred 120 140 85  more (adjective) than Mary is more intelligent than Joe. Fred is less intelligent than Joe.  less (adjective) than Fred is the least intelligent. Mary is most intelligent.  the most (adjective)  the least (adjective)

Joe Mary Fred depressed athletic blind wrinkly suspicious . . . ?

for one syllable words: (word) + "-er" or "-est" "sweeter" "the quickest" . . . ending in "y": (word: "y" "i") + "er" or "est" "heavier" "the homeliest" . . . ending in "e": (word) + "-r" or "-st" "later" "the littlest" . . .ending in 1 vowel and 1 consonent (double the consonant) "fatter" "the saddest" for longer words: "more" or "the most" + ( word) "more honest" "the most beautiful" for all words "less" or "the least" + (word) "less important" "the least intelligent