feeble

adj.

[1]	weak , lame , infirm , frail , puny , slight , feckless , debilitated , enervated , decrepit , enfeebled , exhausted , weakened , effete , delicate , fragile , powerless , impotent , impuissant , languid , spiritless , sickly , ailing , unsound , faint , dizzy , (Colloq) woozy , (Brit) wonky
[2]	flimsy , faint , weak , ineffectual , ineffective , namby-pamby , half-baked , lame , unconvincing , shoddy , thin , insubstantial , poor , unsatisfactory , insufficient , inadequate , unavailing , meagre , paltry , insignificant , (Colloq) wishy-washy , (Brit) wet
[3]	weak , decrepit , debile , obscure , dim , infirm , rickety , imperceptible , faint , sapless , weak , distant , indistinct , weakly , unclear
[4]	nerveless