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Having ceased to exist or live: a defunct political organization.

[Latin dēfūnctus, past participle of dēfungī, to finish : dē-, de- + fungī, to perform.]

de·func′tive adj.
de·funct′ness n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.defunctness - no longer in existencedefunctness - no longer in existence; "the extinction of a species"
death - the absence of life or state of being dead; "he seemed more content in death than he had ever been in life"