1. Frailty
2. Impuissance
3. Impotence
4. Debility
5. Infirmity
6. Feebleness
7. Debilitation
8. Faintness
9. Vulnerability
10. Lassitude
11. Impairment
12. Inability
13. Helplessness
14. Unfitness
15. Debilitation
16. Ineptitude
17. Debilitated
18. Ineffectiveness
19. Enervation
20. Inefficacy
21. Crippling
22. Incapacity
23. Powerlessness
24. Unsoundness
25. Unsuitability
26. Incompetence
27. Weak link
28. Unstrength
29. Ineffectualness
30. Inability

Are you looking for the best ideas for synonyms for the word ‘weakness’? There are many words that can be used to express the same concept as ‘weakness’. Some of the most popular synonyms for ‘weakness’ include frailty, impuissance, impotence, debility, infirmity, feebleness, debilitation, faintness, vulnerability, lassitude, impairment, inability, helplessness, unfitness, debilitation, ineptitude, debilitated, ineffectiveness, enervation, inefficacy, crippling, incapacity, powerlessness, unsoundness, unsuitability, incompetence, weak link, unstrength, ineffectualness, and inability. Whether you are looking for a single word or a phrase to express the same concept as ‘weakness’, these synonyms will help you find the perfect fit for your needs.