Synonyms of nonextant

Adjective

1. extinct (vs. extant), nonextant, dead, nonexistent

usage: no longer in existence; lost or especially having died out leaving no living representatives; "an extinct species of fish"; "an extinct royal family"; "extinct laws and customs"

2. nonextant, nonexistent (vs. existent)

usage: no longer existing or inaccessible through loss or destruction; "its nonextant original was written on vellum"- G.B.Saul