1. A secret plan to overthrow a certain group or to do something else illegal or wrong.

2. A different idea/theory of why something (usually bad) happened, rather than the one which people are told.
1. A group of young men decided to conspire against their government.

2. 9/11 has many conspiracy theories surrounding it.
by theforgottenspark January 11, 2007
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A theory of another result other than the one fed to one through mainstream lies. It is usually more documented, relevant, logical, and resourceful that what is commonly accepted as the truth surrounding an event.

Also see:
september 11th
osama bin laden
Oswald killed Kennedy alone? No.

It was CIA in conjunction with the military industrial complex.
by InsertMoniker December 29, 2004
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A game typically played on paper in which many things are humorously or randomly linked together and often tied to a central object. It is a parody of pundit Glenn Beck and his blackboard conspiracies
I'm going to play Conspiracy! and tie George Soros to kids dying in kiddie pools.
by MythDebunker154 June 21, 2011
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A group of women.
"What do you call a group of crows?" "A murder."
"What do you call a group of women?" "A conspiracy."
by Gryph August 7, 2014
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A theory as to why a major or minor event has occurred.
The theory may be truthful, or at least plausible, but the message of said theory may be propagated with fear, suspicion, and paranoia.
It is to note that conspiracy is NOT synonymous with truth, as some would like you to believe.
Conspiracies may also be deceitful as well, though they may seem to be completely honest.
9/11 is supposedly an inside job, even though people seem to forget that thousands of FBI agents, firefighters, demolition experts, scientists, CIA, rescue workers, police, airline pilots, NSA, The majority of the House Of Representatives, air traffic control, and the entire Bush administration would undoubtedly know about it and yet refuse to expose it.
Hence being a conspiracy
by Taco Roco August 25, 2009
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a lie around a big thing like aliens, ghosts and bush.
conspiracy: osam bin laden flew airplanes into world trade center.

truth: george.w.bush flew airplanes into world trade center.
by kjæran April 21, 2008
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A conspiracy is usually an event caused by a man or woman of the jewish faith.
In south park jews are blamed for 9/11, titanic the biggest conspiracy of all and we all know who it was....
by Kruschev99 August 5, 2008
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