In a manner that opposes or rejects medieval characteristics, traditions, or modes of thinking.
From antimediaeval + -ally (adverb suffix). The form allows for description of approaches, perspectives, or critiques that systematically reject medieval values.
When Enlightenment thinkers approached government 'antimediaevally,' they rejected divine right and feudalism—but they also accidentally rejected some medieval ideas about community care that modern society might have benefited from keeping.
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