никакой
nullus [a, um];
естественно
naturaliter; secundum naturam;
тигель
crucibulum [i, n];
constans [ntis];
immutabilis [e];
immutatus [a, um];
stabilis [e] (amicus);
inflexibilis [e];
perpetuus [a, um] (cursus stellarum);
vivax [cis];
integer [gra, um];