conspiration

[kon-spuh-rey-shuh n] /ˌkɒn spəˈreɪ ʃən/
noun
1.
joint effort.
2.
Obsolete, conspiracy.
Origin
1275-1325; Middle English conspiracioun < Anglo-French; Middle French conspiration < Latin conspīrātiōn- (stem of conspīrātiō), equivalent to conspīrāt(us) (past participle of conspīrāre to conspire) + -iōn- -ion
Related forms
conspirational, adjective