Synonyms for weak

Some common synonyms of weak are: weak [a.] 1. Feeble, languid, weekly. 2. Sickly, debilitated, unhealthy, unsound, infirm, tender, valetudinary, valetudinarian, invalid, frail, delicate, fragile. 3. Defenceless, unguarded, exposed, unprotected. 4. Soft, pliant. 5. Pliable, pusillanimous, easily influenced, without any backbone, irresolute. 6. Shallow, simple, silly, senseless, witless, stupid, foolish, childish, imbecile. 7. Unwise, injudicious. 8. Indiscreet, erring, peccable, foolish, imprudent. 9. Feeble. 10. Low, faint, small, feeble, piping, womanish. 11. Thin, watery, diluted, waterish, insipid, tasteless. 12. Sleazy, flimsy, slight, poor, trifling, feeble, frivolous. 13. Poor, inconclusive, unconvincing, unsatisfactory, lame, illogical, vague. 14. Accessible, assailable, vulnerable. 15. Unsustained, unsupported. 16. Ineffective, inefficient, inefficacious. 17. Unsound, unsafe, untrustworthy, frail, unsubstantial. 18. Infirm, unstable, unsteady, undecided, wavering, unsettled. 19. Ineffectual. 20. Powerless. 21. Delicate, frail, fragile. 22. Small, slight, slender, inconsiderable.