The story
First known use, by meaning
- from 1960s Not distinguished on the basis of sex or gender; suitable for any sex or gender.
- from 1910s Of or pertaining to only one sex or gender; unisexual.
- from 1960s The state of not being distinguished on the basis of sex or gender; the state of being suitable for any sex or gender.
Etymology from Wiktionary, CC BY-SA 4.0.