Comparative and superlative. 11. hot 12. happy

13. wet

14. narrow

15. big

16. busy

17. noisy

18. dirty

19. thin

20. little

21. bad ​

11. hot -hotter- the hottest

12. happy -happier-the happiest

13. wet -wetter-the wettest

14. narrow -narrower-the narrowest

15. big - begger-the biggest

16. busy -busier-the busiest

17. noisy -noisier-the noisiest

18. dirty -dirtier-the dirtiest

19. thin -thinner-the thinnest

20. little -less-the least

21. bad -worse-the worst