say it: kuhn-SPIR-uh-see
conspiracy is a noun meaning "a secret agreement between two or more people to perform an unlawful act". It carries 3 recorded senses.
a secret agreement between two or more people to perform an unlawful act
a plot to carry out some harmful or illegal act (especially a political plot)
politics
a group of conspirators banded together to achieve some harmful or illegal purpose
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for conspiracy come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.