We use the comparative and superlative form of words to compare two or more places, people or things. We usually add er/-est to adjectives/adverbs with one or two syllables. The last consonant is doubled for one syllable adjectives with consonant consonant. For one or two lable adjectives adverbs that end in -y the y changes toibefore we add-er-est We use mare most or least with adjectives/adverbs of more than two syllables,