The definition of a conspiracy is a secret plan to do something, or is the action of creating a secret plot.(noun)
A secret plan to overthrow the government is an example of aconspiracy.
See conspiracy in Webster's New World College Dictionary
noun pl. conspiracies
Origin: ME conspiracie, prob. via ML conspirancia < L conspirare: see conspire
See conspiracy in American Heritage Dictionary 4
noun pl. con·spir·a·cies
Origin: Middle English conspiracie
Origin: , from Anglo-Norman
Origin: , probably alteration of Old French conspiration
Origin: , from Latin cōnspīrātiō, cōnspīrātiōn-
Origin: , from cōnspīrātus
Origin: , past participle of cōnspīrāre, to conspire; see conspire.
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