相关单词近義詞adj. essential, necessary, urgent反義詞beseeching, 懇求似的臨近詞imperceptible, impenetrable, imperatives, imperatively, imperative act, imperativeness, imperative law, imperative tone, imperative a., imperative pain, imperative verb, imperative mood相似詞impend, impending, impenetrable, impenitent, imperceptible, imperfect, imperfection, imperial, 返回 imperative