Intriguing enough to try and look up what "vividum" means ... And not finding an English definition ... So no longer caring if it's "dead" or not.
does the Title "Vividum Dead" sound intriguing?
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Hi Diddly Doo. Welcome to Blurtit. Are you and I related?
An honest answer? It jars just a little. I assume you intend it to mean "Living Dead" but it fails when you combine pseudo-Latin with English. Why not use a title like The Revenant or The Eidolon, both of which are less well-known forms of the "living dead". The first one, of course, was the title of a movie but, if you want something unusual, do a search of the mythology of the Celts, or of Europe.