In a manner related to or characteristic of Calvinism; done according to Calvinist principles or beliefs.
From calvinistic plus the adverbial suffix -ally, forming an adverb that describes how something is done or the manner in which something occurs in relation to Calvinist theology.
When someone acts 'calvinistically,' they're approaching life with that characteristic Calvinist intensity about moral behavior and hard work—the Puritans were calvinistically strict about everything from dress codes to how you spent your Sundays.
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