zasti -zat-za'i- gismu

x1 exists/is real/actual/reality for x2 under metaphysics x3.

Words usable for epistemology typically have a du'u place. x1 is physical (one sense). See also fatci, xanri.

In notes:

fatci
x1 (du'u) is a fact/reality/truth/actuality, in the absolute.
slabu
x1 is old/familiar/well-known to observer x2 in feature x3 (ka) by standard x4.
xanri
x1 [concept] exists in the imagination of/is imagined by/is imaginary to x2.
facyza'i
x1 is real / really exists in this universe
zatra'i
r1=z1 exists over interval r2.
zazyza'i
x1 is the existence of x2
du'inxo
x1 becomes x2 (concrete); x1's current time slice stops existing and is replaced by x2
enzasti
x1 exists/is real in universe-of-discourse x2
feiksti
x1 does not exist/is not real/is not actual/is not reality/is fake for x2 under metaphysics x3; x1 is a fakester/huxter (no intention of tricking, because it does not exist).