Adverbs

Like adjectives, adverbs follow three degrees of comparison: positive, comparative, and superlative degrees.

Most one-syllable adverbs form their comparative degree by adding -er and the superlative degree by adding -est.

Positive Comparative Superlative
hard harder hardest
late later latest
deep deeper deepest
soon sooner soonest
low lower lowest

Adverbs with two or more syllables, especially those ending in -ly, form their comparative degree by using more or less and their superlative degree by using most or least.

Examples:

Grapes grow abundantly in the US.

Grapes grow more abundantly in China than in the United States.

There are some adverbs that form their comparative and superlative degrees differently.

Positive Comparative Superlative
well better best
much more most
ill worse worst
badly worse worst
little less least

Examples:

Our gardener did the landscaping of the yard well.

Your gardener did better with your garden, though.

Sheena's gardener did the best with their garden.