Synonyms and related words :
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