Large-larger-the largest dirty-dirtier- the dirtiest little -less - the least difficult - more difficult - the most difficult far - farther - farthest / further - the furthest wet - wetter - the wettest lazy - lazier - the laziest generous - more generous - the most generous narrow - narrower - narrowest bad - worse - the worst tasty - tastier - the tastiest wonderful - more wonderful - the most wonderful fat- fatter - the fattest fine - finer - the finest interesting - more interesting - the most interesting good - better - the best tidy - tidier - the tidiest brave - braver - the bravest old - older - the oldest expensive - more expensive- the most expensive