preri experimental gismu

x1 is a non-binary-gendered parent of x2 [not necessarily biological]

Specifies rirni so as to be co-equal to but neither patfu nor mamta. See also: dinti, rirni, mamta, patfu, nunmu.

In notes:

x1 is a non-binary-gendered offspring/child of mother/father/parents x2 [not necessarily biological]; x1 is filial (but not a son or daughter)