Crowded
more crowded / the most crowded
Fast
faster / the fastest
Hot
hotter / the hottest
Attractive
more attractive / the most attractive
Clean
cleaner / the cleanest
Nice
nicer / the nicest
Ugly
uglier / the ugliest
Interesting
more interesting / the most interesting
Quiet
quieter / the quietest
Carefully
more carefully / the most carefully
Slowly
more slowly / the most slowly
beautiful
more beautiful / the most beautiful
Tall
taller / the tallest
Big
big / the biggest
Bad
worse / the worst
Good
better / the best
