fatci -fac- gismu

x1 (du'u) is a fact/reality/truth/actuality, in the absolute.

See also datni, jitfa, sucta, xanri, jetnu, fasnu, zasti, cfika, saske.

In notes:

cfika
x1 is a work of fiction about plot/theme/subject x2/under convention x2 by author x3.
datni
x1 (du'u) [fact/measurement] is data/information/statistic(s) about x2 gathered by method x3.
fasnu
x1 (event) is an event that happens/occurs/takes place; x1 is an incident/happening/occurrence.
jetnu
x1 (du'u) is true/truth by standard/epistemology/metaphysics x2.
jitfa
x1 (du'u) is false/is an untruth by standard/epistemology/metaphysics x2.
saske
x1 (mass of facts) is science of/about subject matter x2 based on methodology x3.
sucta
x1 (si'o) is abstracted/generalized/idealized from x2 [something concrete] by rules x3.
xanri
x1 [concept] exists in the imagination of/is imagined by/is imaginary to x2.
zasti
x1 exists/is real/actual/reality for x2 under metaphysics x3.
facfau
x1 (nu) really happens / actually happens
facmu'e
x1 is reality / "the real world" ("this" world, the world the speaker and [presumably] listener reside in), containing/defining x2 (objects and facts) defined by rules x3
facnarkri
x1 is delusional, suffering from delusions; x1 has a false belief x2 (du'u) that confrontas with actual facts
facycku
x1 is a factbook, containing work x2 by author x3 for audience x4 preserved in medium x5
facyza'i
x1 is real / really exists in this universe
raxfatci
f1=r1 is absurd, contrary to expectation r2 in aspect r3.
fi'ai (exp!)
marks end of prenex in stack-based dialect
mu'ai (exp!)
munje modal: 1st place; in universe...
du'umdu
x1 is a proposition/predication (statement with a truth value), stating that x2 is true
enfasnu
x1 happens in universe-of-discourse x2
enzasti
x1 exists/is real in universe-of-discourse x2