- 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.
New dictionary of synonyms. 2014.