The quality of being confident; a feeling of self-assurance or certainty about something.
From confident (Latin confidentem, 'trusting, bold') + -ness. Confident originally meant 'full of trust' before it shifted to mean 'self-assured' around the 1600s.
Interestingly, confident used to mean you trusted *others*, but by the 1700s it flipped to mean you trusted *yourself*—a subtle linguistic shift that mirrors how individualism grew in Western culture.
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