one syllable
quick
heavy
heavier than
polite
more polite than
popular
more popular than
good
better than
cold
colder than
dirty
dirtier than
crowded
more crowded than
important
more important than
bad
worse than
kind
kinder than
healthy
healthier than
tired
more tired
dangerous
more dangerous than
far
farther than / further than
near
nearer than
noisy
noisier than
useful
more useful than
beautiful
more beautiful than
more fun