Acceptable for or available to any gender.
Agender, being neither male nor female nor any third gender; free of gender.
Which does not define people in the basis of gender; in which gender is irrelevant to people's lives and choices.
Unisex; suitable for any sex or gender.
Of an organism, having characteristics of a single sex (as opposed to hermaphrodites).
Of a species, having only a single (potentially hermaphroditic) sex (as opposed to bisexual).
An organism which is unisexual.