Weak

adjective

1. lacking strength: such as
2. not factually grounded or logically presented
3. not able to function properly
4. lacking skill or proficiency
5. indicative of a lack of skill or aptitude
6. wanting in vigor of expression or effect
7. deficient in the usual or required ingredients : dilute
8. lacking normal intensity or potency
9. not having or exerting authority or political power
10. ineffective, impotent
11. of, relating to, or constituting a verb or verb conjugation that in English forms the past tense and past participle by adding the suffix -ed or -d or -t
12. deficient in physical vigor : feeble, debilitated
13. retaining a lesser number of distinctions in case, number and genderof a noun or adjective declension in Germanic languages
14. bearing the minimal degree of stress occurring in the language
15. having little or no stress and obscured vowel sound
16. tending toward a lower price or value
17. ionizing only slightly in solution
18. not able to sustain or exert much weight, pressure, or strain
19. not able to resist external force or withstand attack
20. easily upset or nauseated
21. mentally or intellectually deficient
22. not firmly decided : vacillating
23. resulting from or indicating lack of judgment or discernment
24. not able to withstand temptation or persuasion