substantiative

/səbˈstænʃiˌeɪtɪv/
adjective
  1. Providing or tending to provide evidence or proof; serving to substantiate.
    • Her substantiative argument convinced the jury of the defendant's innocence.
    • The detective gathered substantiative clues that linked the suspect to the crime.
    • The report lacked substantiative details, so the editor asked for more research.
What does "substantiative" mean? | whatsthatwordmean | whatsthatwordmean