sez ni'i lujvo

x₁ is a tautology under rules/logic system x₂

Synonymous with kutyje'u. See also nibli.

jbovlaste

In notes:

kutyje'u: x₁ a tautology by standard/epistemology/metaphysics x₂.
seznibju'a: j₁ (text) is a tautological statement about j₂ in language j₃.
zilzilo: Tautological/empty predicate; it is true regardless of what and how many arguments are given to it; x₁ is anything