Slow-slower -the slowest.
beautiful- more beautiful- the most beuatiful
long-longer-the longest
many -more -the most
big-bigger -the biggest
clever-cleverer-the cleverest
dangerous-more dangerous- the most dangerous.
funny-funnier-the funniest
little-less-the least
tall-taller-the tallest
thin-thinner-the thinnest
ugly-uglier-the ugliest
short-shorter-the shortest
lazy-lazier-the laziest