- Age-old (verities) - As long-lived as Rome? - Everlasting - Everlasting sort of triangle - Lasting or existing forever - Learn ET became everlasting - Little white tern, allegedly immortal
- Impossible to shift - Never changing - Not subject to change - Unalterable - Unmodifiable - Not mutable; not capable or susceptible of change;
unchangeable; unalterable.
- Subject to change; changeable; variable. - Causing a change of structure. - Pertaining to, produced by, or exhibiting, certain
changes which minerals or rocks may have undergone since their original
deposition; -- especially applied to the recrystallization which
sedimentary rocks have undergone through the influence of heat and
pressure, after which they are called metamorphic rocks.