mindmap root((无力)) unnerve implies a marked and often temporary loss of courage, self-control, or power to act: ~d by the near midair collision. enervate suggests a gradual physical or moral weakening through such debilitating influences as climate, disease, luxury, or indolence until one is too feeble to make an effort: totally ~d after a week's vacation. unman implies a loss of manly vigor, fortitude, or spirit: the sight of blood usually ~ned him. emasculate stresses a depriving of characteristic force by removing something essential: an amendment that ~s existing gun-control laws.