1
[ adjective ] no longer in existence; lost or especially having died out leaving no living representatives

Synonyms

extinct

Examples

"an extinct species of fish" "an extinct royal family" "extinct laws and customs"

Related terms

extant dead nonexistent

2
[ adjective ] no longer existing or inaccessible through loss or destruction

Examples

"its nonextant original was written on vellum"- G.B.Saul

Related terms

nonexistent

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