This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of, or relating to a conspiracy; conspiratorial.

"Very sweet story … I love the conspiratory nature of the conversation."

conspirator    conspirators   

conspiratress    confederate    complotter    colluder    cataline   

communitarian    should'st    lightning-quick    half-convinced    evangelic