different between archaist vs archaistic

English

archaist (plural archaists)

From archaist +? -ic.

archaistic (comparative more archaistic, superlative most archaistic)

Pertaining to an archaist; deliberately archaic, old-fashioned in an affected way.
- 1946, Bertrand Russell, History of Western Philosophy, I.27:
  The emperor Augustus introduced an archaistic revival of ancient virtue and ancient religion, which caused the poem of Lucretius On the Nature of Things to become unpopular, and it remained so until the Renaissance.

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