Forever (adverb)

1. For all time, for an infinite time.
2. Constantly, without interruption.
3. For all eternity, without end.
4. Without fail, certainly.

Origin:

Middle english for ever, from old english for-evor, from for- + ever.

Examples:

1. They will love each other forever.
2. She will be forever young.
3. The memory of the tragedy will remain forever.
4. I will be here forever.
5. Forever and ever, Amen.