opposite sex
noun
the opposite sex women in relation to men or men in relation to women
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for opposite sex
Contemporary Examples of opposite sex
In contrast, we found several research projects that compared much larger numbers of children in same and opposite-sex households.
Before her same-sex marriage, Vincent was involved in an opposite-sex marriage that ended in divorce.
The sexual activity of same-sex couples implies no consequences similar to that of opposite-sex couples.