英语词汇“efficacious”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	efficacious
释义	efficacious adjective /ˌefɪˈkeɪʃəs/ /ˌefɪˈkeɪʃəs/ (formal) jump to other results (of things, not of people) producing the result that was wanted or intended synonym effective They hope the new drug will prove especially efficacious in the relief of pain. Topics Successc2 Word Originearly 16th cent.: from Latin efficax, efficac- (from efficere ‘accomplish’, from ex- ‘out, thoroughly’ + facere ‘do, make’) + -ious.
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