• the spirit is willing but the flesh is weak
• feebly, languidly, shakily
• debility, incapacity, languidity, tenuity, tenuousness
• to bring down, to debilitate, to enervate, to extenuate
• emasculative, emasculatory
• debilitation, emasculation, extenuation
• debilitation, emasculation
• to take the pep out of sg