THESAURUS
unnerve
abate, affright, agitate, alarm, attenuate, blunt, castrate, cramp, cripple, crush, curdle the blood, damp, dampen, dash, deaden, debilitate, demasculinize, demoralize, desex, desexualize, devitalize, discomfit, disconcert, dismay, disquiet, dull, effeminize, emasculate, enervate, enfeeble, etiolate, eviscerate, exhaust, extenuate, faze, fluster, fright, frighten, funk, gruel, horripilate, intimidate, knock down, lay low, make one tremble, mitigate, overcome, perturb, prostrate, psych out, raise apprehensions, rattle, reduce, ruffle, sap, scare, shake, shake up, soften up, spook, stagger, startle, sterilize, stun, stupefy, unbrace, undermine, undo, unman, unsettle, unstrengthen, unstring, upset, weaken
ROGET THESAURUS
unnerve
Impotence
VB
be impotent, not have a leg to stand on, vouloir rompre l'anguille au genou, vouloir prendre la lune avec les dents, collapse, faint, swoon, fall into a swoon, drop, go by the board, go by the wayside, go up in smoke, end in smoke, render powerless, deprive of power, disable, disenable, disarm, incapacitate, disqualify, unfit, invalidate, deaden, cramp, tie the hands, double up, prostrate, paralyze, muzzle, cripple, becripple, maim, lame, hamstring, draw the teeth of, throttle, strangle, garrotte, garrote, ratten, silence, sprain, clip the wings of, put hors de combat, spike the guns, take the wind out of one's sails, scotch the snake, put a spoke in one's wheel, break the neck, break the back, unhinge, unfit, put out of gear, unman,
unnerve, enervate, emasculate, castrate, geld, alter, neuter, sterilize, fix, shatter, exhaust, weaken.
Weakness
VB
be weak, drop, crumble, give way, totter, tremble, shake, halt, limp, fade, languish, decline, flag, fail, have one leg in the grave, render weak, weaken, enfeeble, debilitate, shake, deprive of strength, relax, enervate, eviscerate, unbrace,
unnerve, cripple, unman, cramp, reduce, sprain, strain, blunt the edge of, dilute, impoverish, decimate, extenuate, reduce in strength, reduce the strength of, mettre de l'eau dans son vin.