The phrase "as non-existent" is correct and usable in written English.
It can be used to describe something that is perceived to have no existence or presence in a particular context.
Example: "The evidence for his claims was as non-existent as the support for his argument."
Alternatives: "as nonexistent" or "as absent".
Bunker Fuel--or more accurately called Bunker Oil--remains off the record, ghost stuff, as non-existent as the prisoners held at Guantanamo Bay, making the CO2 emissions for the military even grosser than anyone's assumptions and calculations.
Where DNSSEC so far authenticates existing resources, it is difficult to authenticate non-existing resources as non-existent records (1) have no corresponding signature, and (2) if for every NXDOMAIN response a signature would be computed online, key pairs would be more vulnerable to attacks.
Its internal party democracy was exposed as non-existent by the "coronation" of Brown.
He described the policing outside the Leppings Lane turnstiles, where Duckenfield accepted the South Yorkshire police lost control at 2 40pm, as "non-existent or shambolic at best".
Most students felt that, when they did start term, induction was a low priority and described arrangements as "non-existent" or "rudimentary".
RBNY fans bristle (to put it mildly) at every bit of corporate speak or media coverage that treats their team as non-existent.
This despite the fact that the reviews for the first three are what diplomatic types refer to as "mixed", while reviews for The White Ribbon are as yet non-existent (it doesn't screen until tomorrow).
Shortly afterwards the British Museum selected Jila's original book for their major exhibition of contemporary Middle Eastern calligraphy, Word into Art, and, with the museum bookshop placing a large order for the as yet non-existent cheaper version, the project was away.
However, such cohorts are as yet non-existent.
It's almost as if the GOP, having failed to spark panic about an as-yet non-existent Social Security crisis, is determined to engineer one.
In the 1970s and 1980s, wastage was described by some Ministry officials as minimal and, by others, as almost non-existent; but now is described as "a lot".
