1.
Something that is ~ lasts for ever.
Whoever believes in Him shall have ~ life.
...the quest for ~ youth.
ADJ
~ly
She is ~ly grateful to her family for their support...
ADV: ADV adj, ADV with v
2.
If you describe something as ~, you mean that it seems to last for ever, often because you think it is boring or annoying.
In the background was that ~ hum.
= interminable, never-ending
ADJ