the act of firmly and repeatedly demanding something or stating something as a fact, even when others disagree.
From Latin 'insistere' (to stand upon/persist), combining 'in-' (upon) and 'sistere' (to stand/stop). The noun form developed in Middle French and entered English meaning persistent demands.
Psychological research shows that people often believe information more strongly if they've heard themselves insist on it—repeated insistence actually rewires your own conviction, a phenomenon called the 'illusory truth effect.'
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