Conspiracy
/kəˈnspɪrəsi/
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Definition
(noun) An agreement or arrangement between multiple parties to do something harmful, immoral or subversive; an instance of collusion.
Sentence Examples
Without a moment's hesitation, they took drastic action against the conspiracy.
To be frank, I think this 'conspiracy theory' is nonsense.
CEFR Practice Quiz
The documentary explores a popular online ____ theory claiming the moon landing was totally faked.