Adding -er/estWe make the comparative or superlative forms of short adjectives by adding -er or -est, for example: hard, harder, hardest

Spelling RuleJust add -er or -est to the end of the adjective, for example:

quick, quicker, quickest

great, greater, greatest

full, fuller, fullest

Exceptions(note: C=consonant; V=vowel)

If adj. ends in do thisand add Examples

C + y change y to i er

est

happyhappierhappiest

C + e remove e latelaterlatest

C + V + C double last letter

hothotterhottest

Note: adjectives ending in -l are regular, except:cruel, crueller, cruellest