Examples
Nice
Nicer/ Nicest
Large
Larger/ Largest
Comparative of "Good/ Well"
Better
Heavy
Heavier/ Heaviest
Funny
Comparative of big
...
Boring
More/ less boring
Most/ least boring
Sleepy
Sleepier/ Sleepiest
Comparative of cheap
....
Fun
More/ Less Fun
Most/ Least Fun
Interesting
More interesting/ less interesting
Most interesting/ least interesting
Comparative of "Old"
Older/ Elder
Handsome
Handsomer/ Handsomest
More handsome/ Most handsome
Polite
More/ Less polite
Most/ Least polite or Politest
Comparatives of "bad
.....