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Learn the meaning, pronunciation and usage of the adjective effective , which means producing the result that is wanted or intended. See also synonyms, collocations and word origin of effective . 1. 有效的 [（+against/in）] [+to-v] Window screens are effective in keeping out mosquitoes. 紗窗能有效地擋住蚊子。 2. （法律等）生效的，起作用的 [Z] A bill passed by congress becomes effective as soon as the President signs it. 國會通過的法案一經總統簽署立即生效。 3. 給人深刻印象的，有力的 That's rather an effective use of color. 那樣使用顏色效果甚佳。 4. 實際的，事實上的 [Z] Although there is a parliament, the army ... EFFECTIVE - Synonyms, related words and examples | Cambridge English Thesaurus EFFECTIVE definition: 1. successful or achieving the results that you want: 2. (used about a treatment or drug) working…. Learn more.
