Rules:- Adding the suffix –less.
1.
endless
2.
joyless
3.
careless
4.
helpless
5.
fearless
6.
homeless
7.
hopeless
8.
painless
9.
harmless
10. thankless
11. pointless
12. sleepless
13. useless
14. cheerless
15. penniless
16. faultless
17. toothless
18. thoughtless
19. reckless
20. defenceless