one syllable
old
older than...
silly
sillier than...
careful
more careful than...
interesting
more interesting than...
cold
colder than...
tall
taller than...
easy
easier than...
boring
more boring than...
beautiful
more beautiful than...
dirty
dirtier than...
smart
smarter than...
angry
angrier than...
famous
more famous than...
important
more important than...
peaceful
more peaceful than...
short
shorter than...
happier than..
modern
more modern than...
dangerous
more dangerous than...
important
more important than...
young
younger than...
lazy
lazier than...
worried
more worried than...
expensive
more expensive than...
exciting
more exciting than...