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• n  ideological defection from the party line (especially from orthodox communism)

• Sister Ruth skips quickly over the political blush that came into her cheekbones and Mike's in 1946, when the Communist Party publicly booted them out for "left deviationism.
• Bolshevichka and Mayak showed such a resounding improvement in efficiencyand such "deviationism"that many Kremlinologists assumed they had contributed to Nikita's downfall.
• As every good Communist knows, '"deviationism" is the primary sin in Moscow's decalogue.