To inflect according to the degrees of comparison; to state positive, comparative, and superlative forms of; as, most adjectives of one syllable are compared by affixing "- er" and "-est" to the positive form; as, black, blacker, blackest; those of more than one syllable are usually compared by prefixing "more" and "most", or "less" and "least", to the positive; as, beautiful, more beautiful, most beautiful.