ineffective的词源

英文词源

ineffective (adj.)youdaoicibaDictYouDict
1650s, from in- (1) "not, opposite of" + effective. Related: Ineffectively; ineffectiveness.

中文词源

ineffective:无效的

in-,不,非,effective,有效的。

该词的英语词源请访问趣词词源英文版:ineffective 词源,ineffective 含义。