Eternal (adjective)

1. Enduring forever; without end.
2. Enduring for an infinite amount of time; eternal.

Origin:

From middle english, from old french eternel, from latin aeternus, from aevum ("age, eternit.y")

Examples:

1. The love between mother and child is eternal.
2. Eternal life is promised to believers in many religious traditions.
3. The stars shine eternal in the night sky.
4. The concept of eternal damnation is a common belief in many religions.
5. Eternal youth is a popular theme in fantasy and science fiction.