Gone but not forgotten meaning

Some who is frequently remembered in spite of their physical absence (which, in many cases, is due to their death).

1. What is the meaning of but never forgotten?
2. What is one word that Cannot be forgotten?
3. What is the idiomatic expression of Forgotten?
4. Is forgotten a word in English?

What is the meaning of but never forgotten?

impossible to forget; highly memorable. Collins English Dictionary.

What is one word that Cannot be forgotten?

making marks that cannot be erased, removed, or washed out: indelible ink. impossible to eliminate, forget, or change: the indelible memories of war;the indelible influence of a great teacher.

What is the idiomatic expression of Forgotten?

The expression slip someone's mind is often used informally when someone forgets to do something. I meant to tell you that he'd phoned, but it completely slipped my mind. If a word is on the tip of your tongue, you have forgotten it but think that you will very soon remember it.

Is forgotten a word in English?

Forgotten is the past participle of forget.