senci -sec- gismu

x1 sneezes (intransitive verb).

See also bilma, kafke.

In notes:

bilma
x1 is ill/sick/diseased with symptoms x2 from disease x3.
kafke
x1 coughs/farts/burps up/out x2 [predominantly gaseous] from orifice x3.
secysna
x1 is the sound produced by x2’s sneezing.