far - further - the furthest
beautiful - more beautiful - the most beautiful
big - bigger - the biggest
stupid - more stupid - the most stupid
funny - more funny - the most funny
difficult - more difficult - the most difficult
comfortable - more comfortable - the most comfortable
serious - more serious - the most serious
good - better - the best
happy - happier - the happiest

little - less - the least
common - more common - the most common
cruel - more cruel - the most cruel
gentle - more gentle - the most gentle
likely - more likely - the most likely
narrow - narrower - the narrowest
pleasant - more pleasant - the most pleasant
polite - politer - the politest
shallow - more shallow - the most shallow
simple - simpler - the simplest