The phrase "as a virtual nonentity" is correct and usable in written English.
It can be used to describe someone or something that is perceived as insignificant or lacking presence in a particular context.
Example: "Despite his efforts, he felt as a virtual nonentity in the large crowd of influential speakers."
Alternatives: "as an insignificant figure" or "as a mere presence."
H.P., meanwhile, came off as a virtual nonentity at the show, which is the global cellphone industry's biggest annual event.
It was in search of just such a miracle that Landrieu's hyperdrive stunt to will a Keystone bill over the goal line was born, in order to give Landrieu some slight opportunity to demonstrate to voters that she had some sort of clout after spending the bulk of her time presiding over the Energy and National Resources Committee as a virtual nonentity.
Perez is a virtual nonentity with Manuel.
Both Bhadveer's career and mine are overshadowed by that of someone who was a virtual nonentity in graduate school, a very quiet guy who went on to write screenplays for which he's twice won an Oscar.
Mr. Préval, who has managed to do next to nothing with considerable means at his disposal, is pushing the candidacy of one of the front-runners, Jude Célestin, a virtual nonentity who, it is assumed, would simply continue the non-policies of the Préval regime.
The Japanese electronics maker — one of the world's biggest video game companies but a virtual nonentity in the rapidly growing mobile games industry — unveiled its first title for smartphones Thursday in Tokyo.
Even stuff that somebody did which seems at face value to be mediocre to the point of being a virtual creative nonentity has admirers in this world for whom such a thing is "Almost as good as sex!!!!" That is AMAZING!
The midfielder finished as a virtual passenger.
Think of it as a virtual universe.
Both the adjective ungeheuer (meaning "monstrous" or "huge") and the noun Ungeziefer are negations — virtual nonentities — prefixed by un.
Until recently, though, Burberry was seen by the fashion world as a stodgy nonentity.
