conspiration

noun

con·​spi·​ra·​tion ˌkän(t)-spə-ˈrā-shən 

ˌkän-(ˌ)spi-ˈrā-

1

: the act or action of plotting or secretly combining

2

: a joint effort toward a particular end

conspirational

ˌkän(t)-spə-ˈrā-shnəl 

-shə-nᵊl

ˌkän-(ˌ)spi-ˈrā-

adjective

Word History

First Known Use

14th century, in the meaning defined at sense 1