x1 is a non-binary-gendered humanoid person [not necessarily adult]
Umbrella term for any non-man non-woman (in some aspect/consideration/standard) humanoid person. As such, it is a specification of rempre/remna/prenu co-equal with ninmu and nanmu; it generalized some of the aforementioned cases. Word dispreferred in metaphor/example as sexist; use instead remna or prenu. See also: ninmu, nanmu, remna, prenu, makcu, bersa, tixnu, paznu, nakni, fetsi, dinti, nanla, nixli, verba, vepre