Comparative
small
smaller
funny
funnier
intelligent
more intelligent
short
shorter
straight
straighter
good-looking
more good-looking
old
older
curly
curlier
long
longer
tall
taller
good
better
beautiful
more beautiful
young
younger
pretty
prettier
noisy
noisier
quiet
quieter
nice
nicer
bad
worse
far
further
happy
happier