difficult more difficult the most difficult
new newer the newest
small smaller the smallest
fat fatter the fattest
cheap cheaper the cheapest
good better the best
poor poorer the poorest
hot hotter the hottest
beautiful more beautiful the most beautiful
happy happier the happiest
big bigger the biggest
sad sadder the saddest
cold colder the coldest
thin thinner the thinnest
easy easier the easiest
rich richer the richest
bad worse the worst
expensive more expensive the most expensive
ugly uglier the ugliest
old older the oldest