comparison forms are usual only for qualitative adjectives and adverbs. comparative and superlative synthetic forms are not part of the paradigm of original adjectives but are different lexical items, since not all qualitative adjectives have them. a few adjectives have irregular forms that are declined like ordinary adjectives: 'big' — 'bigger', 'good' — 'better'. most synthetically derived comparative forms are derived by adding or to the adjective stem: 'red' — 'more red'; these forms are difficult to distinguish from adverbs, which they probably are. superlative synthetic forms are derived by adding suffix or and additionally sometimes prefix , or using a special comparative form with наи-: 'kind' — 'the kindest', 'big' — 'the biggest'.