Dark – darker – the darkest popular – more popular – the most popular thin – thinner – the thinnest fine – finer – the finest large – larger – the largest far – father (further) – the farthest (furthest) difficult – more difficult – the most difficult wonderful – more wonderful – the most wonderful thick – thicker – the thickest early – earlier – the earliest little – less – the least old –older – the oldest bad – worse – the worst hot – hotter – the hottest cold – colder – the coldest nasty – nastier – the nastiest necessary – more necessary – the most necessary calm – calmer – the calmest warm – warmer – the warmest heavy – heavier – the heaviest strong – stronger – the strongest