fetso'a lujvo

x1 is a gamete of female x2.

See nakso'a

In notes:

sovda
x1 is an egg/ovum/sperm/pollen/gamete of/from organism [mother/father] x2.
nakso'a
x1 is a gamete of male x2
uivda
x1 is an anthropomorphized sperm/ovum constantly happy by standard x2; x1 is an ummy/eggy