1) 1 syllable adjectives ending in ( ER, EST)
 tall  
 cheap  
 small  
 green 
 high 
 big  
 poor 
 tough 
 wise 
 2) 2 syllable adjectives ending in "y, er, ow" (ER, EST)
 angry 
 busy 
 easy 
 happy 
 pretty 
 clever 
 narrow  
 hollow 
 slender 
 yellow 
 shallow 
 tender 
 3) 2 syllable adjectives ending in "al, ant, ent, ish, ive, ic, ous, ful, less" (MORE, MOST)
 active 
 careless 
 eager 
 famous 
 foolish 
 formal 
 modern 
 private 
 recent 
 secure 
 tragic 
 useful 
 4) Multisyllabic adjectives (MORE, THE MOST)
 comfortable
 curious
 dangerous
 intelligent
 expensive
 succcessful
 .
 Spelling rules:
 1. Adjectives ending in: vowel + consonant + ER, EST > double consonant (big, bigger, the biggest)
 fat 
 hot 
 red 
 sad 
 thin 
 wet 
 2. Adjectives ending in: "e" + ER, EST > "e" before the suffix is omitted (blue, bluer, the bluest)
 brave 
 close 
 pale 
 rude 
 simple 
 wide 
 3. Adjectives ending in: consonant + "y" + ER, EST > "y" sifts for "i" (busy, busier, the busiest)
 dry 
 happy___ 
 shy 
 sleepy__  lucky 
 scary 
 * If before "y" there is a vowel, "y" doesn't change: gray, grayer, the grayest.
 TEST Degrees of Comparison
 sad  
 foolish  
 expensive  
 poor  
 simple  
 gray  
 shy  
 hollow  
 intelligent  
 careless  
 wet  
 lucky  
 cheap  
 tender  
 happy  
 dangerous