AskDefine | Define supposititious

Dictionary Definition

supposititious adj : based primarily on surmise rather than adequate evidence; "theories about the extinction of dinosaurs are still highly conjectural"; "the supposed reason for his absence"; "suppositious reconstructions of dead languages"; "supposititious hypotheses" [syn: conjectural, divinatory, supposed, suppositional, suppositious]

User Contributed Dictionary



  1. spurious; substituted for the genuine
  2. supposed or hypothetical


supposed or hypothetical
  • Dutch: hypothetisch

Synonyms, Antonyms and Related Words

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