nakni -nak- gismu

x1 is a male/buck of species x2 evidencing masculine trait(s) x3 (ka); x1 is masculine.

See also fetsi, bersa.

In notes:

bersa
x1 is a son of mother/father/parents x2 [not necessarily biological].
fetsi
x1 is a female/doe of species x2 evidencing feminine trait(s) x3 (ka); x1 is feminine.
nakybakni
n1=b1 is a bull/steer/ox/male bovine of species/breed n2=b2.
jbepibnafei
x1 (du'u) is the biological sex of x2.