Relating to or characteristic of conspiracy or conspirators(adjective)
WordNet. Princeton University. 2010.
Use "conspirative" in a sentence
"How ingrained in the plenipotentiaries was their proneness for what, for want of a better word, may be termed conspirative and circuitous action may be inferred from the record of their official and unofficial conversations and acts."
"The repressive measures of the government drive the disciples of the new philosophy to conspirative methods."
"Russians, or, indeed, upon any of the peoples represented in Paris, of the Secret Council's conspirative deliberations and circuitous procedure, which were in such strong contrast to the "open covenants openly arrived at" to which in their public speeches they paid such high tribute."