opposite sex


: the other one of two sexes or genders
Crayfish recognize members of their species and opposite sex partly through pheromones, the signal-sending chemicals also used by many insects.David M. Lodge et al.
usually used with the; used especially to refer to women from the point of view of men or to men from the point of view of women
He gets nervous around people/members of the opposite sex. [=around women]
… every father feels a pang when his daughter begins to take a "healthy" interest in the opposite sex.Martin Amis

Word History

First Known Use

1696, in the meaning defined above

Time Traveler
The first known use of opposite sex was in 1696

Dictionary Entries Near opposite sex

Cite this Entry

“Opposite sex.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/opposite%20sex. Accessed 26 May. 2024.

Medical Definition

opposite sex

: the other one of two sexes or genders
usually used with the
At some point in the lives of susceptible men, testosterone in the scalp and in other locations in the body gets changed into dihydrotestosterone, a chemical that affects the hair follicles and inhibits hair growth. Though there's no evidence that bald men suffer any loss of status with the opposite sex, most men don't welcome hair loss.The University of California Wellness Letter
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