A preference for or bias toward ancient things, ideas, or practices over modern ones.
From 'ancient' plus the suffix '-ism' (from Greek '-ismos'), which forms nouns indicating practices, doctrines, or states of being.
This mirrors words like 'classicism' and 'archaism'—intellectuals have formal names for their loves and obsessions. Ancientism describes anyone who'd rather read scrolls than websites!
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