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