Tall-taller- the tallest
thin-thinner-the thinnest
good-better-the best
fat-fatter-the fattest
interesting-more interesting-the most interesting
nice-nicer-the nicest
little-less-the least
wide-wider-the widest
dry-drier-the driest
wet-wetter-the wettest
deep-deeper-the deepest
new-newer-the newest