weak Synonyms

feeble frail infirm watery powerless imperfect slight soft inadequate vulnerable faint ineffectual ineffective weakly fragile shaky helpless puny rickety insufficient decrepit unstable unsufficient unlikely unable unfit unarmed unpowerful unsubstantial unreliable unsound unconceivable unfirm unassured unwell vacillating weak-kneed weakening weakened wayworn waxen valetudinarian waterish senile wasted washy wanting wan vulnerability virtueless