In a manner that opposes mysticism or mystical interpretation; using rational or material explanations.
From antimystical (opposed to mysticism) + -ly (adverbial suffix). This construction follows the standard English pattern of adding -ly to adjectives to form adverbs.
When someone explains a beautiful phenomenon antimystically—turning poetic mystery into physics—they might think they're being more truthful, but neuroscience shows that meaning-making (even mystical meaning) activates different, equally real parts of the brain.
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