Grammar Reference

Adjectives

Comparatives and superlatives

Comparative sentences compare two things.

Superlative sentences compare more than two things.

Different adjectives form comparatives and superlatives in different ways.

Adjective

Comparative Superlative
small smaller than the smallest
big bigger than the biggest
nice nicer than the nicest
dirty dirtier than the dirtiest
beautiful more beautiful than the most beautiful

good
bad
far

better than
worse than
further
/farther than
the best
the worst
the furthest
/farthest

This is how we make the comparative and superlative forms:

-short adjectives (one syllable):

adjective + -er, -est
small smaller smallest

-short adjectives that end in consonant + vowel + consonant (e.g., b + i + g):

adjective (double last letter) + -er, -est
big bigger biggest

-short adjectives that end in e:

adjective + -r, -st
nice nicer nicest

-two-syllable adjectives that end in y:

adjective (change y to i) + -er, -est
dirty dirtier dirtiest

-other two-syllable adjectives and longer adjectives:

more, most + adjective
beautiful more beautiful most beautiful

-irregular adjectives:

comparative and superlative forms are irregular
good better best