Androgynous, effeminate or gender ambiguous.

Krazy's ambiguous gender and feelings for Ignatz were usually preserved; bricks were occasionally thrown.

A few nouns are said to be of "ambiguous" gender, meaning that they are sometimes treated as masculine and sometimes as feminine.

The military is satirized by Nir Hod, whose glamorous photographs of soldiers are of ambiguous gender.

The macaroni and the subsequent imitators were criticized for being gender ambiguous and effeminate.

His nickname was a way of describing his ambiguous gender as well as the method he used in his criminal career.

Houtu is of ambiguous gender.

Casey wasn't given a unisex name intentionally, but it was a serendipitous choice because the character's childlike voice left Casey's gender ambiguous.