Synonyms and related words :
abate, afflict, attenuate, blunt, bugger, cramp, cripple, damp, dampen, de-energize, deaden, debilitate, derange, devitalize, disable, disenable, disorder, drain, dull, enervate, eviscerate, exhaust, extenuate, gruel, hamstring, hors de combat, hospitalize, inactivate, incapacitate, indispose, invalid, kibosh, lame, lay low, lay up, maim, mitigate, put, queer, queer the works, rattle, reduce, sabotage, sap, shake, shake up, sicken, soften up, spike, unbrace, undermine, unfit, unman, unnerve, unstrengthen, unstring, weaken, wing, wreck