impotent
/ˈɪmpətənt/adjective
1
- unable to take effective action; helpless or powerless无能为力的, 无助的; 无能的：
he was seized with an impotent anger.
他被一种无能为力的怒气攫住了。
2
- (of a man) abnormally unable to achieve an erection or orgasm（男人）阳痿的。
2.1
- (of a male animal) unable to copulate（雄性动物）性无能的。
派生词
impotence
nounimpotency
nounimpotently
adverb词源
late Middle English: via Old French from Latin impotent- 'powerless'， from in- 'not' + potent- （see POTENT1）.