Belie(verb)
-to schow something that is false or to condradict somthing or someone.
-syn. confute, contradict, contravene.
- The news station belied the real facts.

Clandestine(adjective)
-To be secretive or conceal something. To deal in deception.
-syn. artful, cloak-and-dagger, closet.
-The German's meetings were clandestine with the Chinease.

Collusion(noun0
-Secret agreement between people with bad intentions.
-Syn. con game, conspiracy, plot.
-The collusion to take over the world was done in secret

Dissemble(verb)
-To mislead or conceal the truth.
-Syn. affect, beard, camouflage.
-The government dissembled the truth about nuclear weapons.

Nefarious(adjective)
-very villainous or wicked.
-Syn. abominable, atrocious, bad.
-The plot against the girls was nefarious.