colorful
more colorful / the most colorful
friendly
friendlier/ the friendliest
expensive
more expensive /the most expensive
energetic
more energetic / the most energetic
difficult
more difficult / the most difficult
easy
easier/ the easiest
calm
calmer / the calmest
dangerous
more dangerous / the most dangerous
comfortable
more comfortable / the most comfortable
cheap
cheaper /the cheapest
uncomfortable
more uncomfortable/ the most uncomfortable
plain
plainer / the plainest