To make something connatural; to cause something to become innate or naturally part of one's character.
From 'connatural' plus the verb-forming suffix '-ize', which means to cause, make, or become. This creates a verb expressing the action of achieving connaturality.
This verb appears almost exclusively in philosophical and theological writing, representing the idea that humans can develop virtues so thoroughly that they become second nature—like how practice can make a skill feel innate rather than learned.
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