Disinformation /disənfərˈmāSH(ə)n/ / noun 

Definition:  Disinformation is false information that is spread deliberately. It’s often used to make people believe in information when it has been proven that isn’t true.

Etymology:  A lot of sources and people think the origin came from Russia because of the meaning dezinformatsiya, which means misinformation. Disinformation tactics started in 1923 by the Russian government and military. However, it appeared in English dictionaries in the late 1980s. The word disinformation was more heavily used in the 1950s by the Stalinist government for their tactics in World War II and the Cold War. Disinformation tactics are still used today.

In a Sentence

Some terrorists use disinformation tactics by lying about the evidence to get the truth.

There was one conspiracy theory for 9/11 that was proven not true as there was no evidence of the disinformation.

The Jews were not evil as they were made out to be because of the disinformation that was spread during WWII.

Synonyms

Misinformation, Falsehood

Antonyms 

Authentication, Truth