This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Not extant.

adj. No longer existing; inaccessible through loss or destruction.

adj. no longer existing or inaccessible through loss or destruction

adj. no longer in existence; lost or especially having died out leaving no living representatives

"Reconstructing the nonextant plate text, like recovering manuscript or fair copy, aims at capturing the historical moment of first creation, but it resulted in abstractions of the kind Bob referred to as the "work" level, because the excavations cannot be verified and the methods deducing them are suspect."

nonexistent    dead