How to form comparative and superlative adjectives
We usually add –er and –est to one-syllable words to make comparatives and superlatives:
                           COMPARATIVE          SUPERLATIVE
| old | older | oldest |
| long | longer | longest |
If an adjective ends in –e, we add –r or –st:
                            COMPARATIVE           SUPERLATIVE  Â
| nice | nicer | nicest |
| large | larger | largest |
If an adjective ends in a vowel and a consonant, we double the consonant:
                      COMPARATIVE           SUPERLATIVE  Â
| big | bigger | biggest |
| fat | fatter | fattest |
If an adjective ends in a consonant and –y, we change –y to –i and add –er or –est:
                           COMPARATIVE           SUPERLATIVEÂ
| happy | happier | happiest |
| silly | sillier | silliest |
We use more and most to make comparatives and superlatives for most two syllable adjectives and for all adjectives with three or more syllables:
                         COMPARATIVE             SUPERLATIVEÂ
| careful | more careful | most careful |
| interesting | more interesting | most interesting |
However, with these common two-syllable adjectives, you can either add –er/–r and –est/–st or use more and most:
| common cruel gentle handsome likely |
narrow pleasant polite simple stupid |
He is certainly handsomer than his brother.
His brother is handsome, but he is more handsome.
She is one of the politest people I have ever met.
She is the most polite person I have ever met.
The adjectives good, bad and far have irregular comparatives and superlatives:
                    COMPARATIVE             SUPERLATIVEÂ
| good | better | best |
| bad | worse | worst |
| far | farther/further | farthest/furthest |