a thing that is very old or old-fashioned (i.e., archaic)
I suppose these fantasy archaisms and interstellar revelations are no different
This reliance on already-existing forms of identification - all those nationalisms and religions, with any number of archaisms ready to crawl out of the crypt - is what postmodernism has been.
That prose, in spite of or because of its archaisms, is good prose: exact, clear, powerful.
the irruption of archaisms in the West's postmodern societies