Purism

n. strict adherence to purity in behavior (or speech, etc.)

This article is about an art style. There is also another meaning for purism, namely linguistic purism. Purism was a form of Cubism advocated by the French painter Amédée Ozenfant and the architect Charles-Edouard Jeanneret (Le Corbusier).
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(n.)
Rigid purity; the quality of being affectedly pure or nice, especially in the choice of language; over-solicitude as to purity.
  

1918 France - movement inspired from cubisme synthetique favoring rigor and authenticity

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purism