Grammar - Beginner - Comparison of Adjectives

Comparison of Adjectives
When you compare two people or things, use the comparative form of the adjective.
Lots of comparative adjectives end in -er.
cheap cheaper
clear clearer
loud louder
new newer
old older
rich richer
short shorter
tall taller
slow slower
thick thicker

- The word than is often used with comparative
adjectives. For example, you might say:
Jack is taller than John.
A sports car is faster than a motorbike.

Use the superlative form of an adjective to compare three or more nouns.
Lots of superlatives end in -est.
clean             cleaner           cleanest
easy              easier              easiest
fat                fatter               fattest
flat               flatter              flattest
heavy           heavier             heaviest
hot               hotter                hottest
narrow        narrower          narrowest
noisy           noisier             noisiest
simple         simpler            simplest
thin             thinner              thinnest
wet              wetter                wettest
- You often add the before the superlative form.
For example, you say:
Mount Everest is the highest mountain in the world.
Peter is the tallest boy in his class.

- With adjectives that end in -e, add -r to form
the comparative, and -st to form the superlative.
For example:
                                       Comparative               Superlative
       close                             closer                         closest
       large                             larger                         largest
       safe                              safer                           safest
       wide                            wider                          widest

- Some adjectives have only one syllable, end with a
consonant, and have a single vowel before the
consonant. With these adjectives, double the last letter
before adding –er to form the comparative, and -est to
form the superlative. For example:
                             Comparative                 Superlative
        big                    bigger                         biggest
       dim                   dimmer                      dimmest
       mad                  madder                         maddest
       sad                    sadder                           saddest

- Some adjectives have two syllables and end in -y. With these adjectives change the y to i. Then add -er to form the comparative, and -est to form the superlative.
For example:
                                 Comparative                  Superlative
busy                             busier                           busiest
dirty                             dirtier                          dirtiest
happy                           happier                        happiest
pretty                           prettier                         prettiest

With some adjectives, you use more to make the comparative form, and most to make the superlative
form.
active                      more active                      most active
charming                more charming                 most charming
cheerful                  more cheerful                   most cheerful
comfortable           more comfortable             most comfortable
delicious                more delicious                  most delicious

Adjectives that form their comparative and superlative with more and most are usually adjectives with two or more syllables, or sounds.
For example:
ac-tive                         ex-pen-sive
beau-ti-ful                   fa-mous
charm-ing                   for-tu-nate
cheer-ful                     in-tel-li-gent
com-fort-a-ble            pow-er-ful
de-li-cious                  val-u-a-ble

The comparative and superlative forms of some adjectives are completely different words.

good          better         best
little           less           least
bad            worse        worst
few            less           least
many         more         most
much         more         most

- With these adjectives, you don’t add -er or more to form the comparative, or -est or most to form
the superlative.