Past tense of brag: to talk boastfully about yourself or your achievements, often exaggerating them.
From Middle English 'braggen' or Old Norse 'bragga', possibly imitating the sound of loud speech. The exact origin is uncertain but may relate to the sense of loud, aggressive talking.
Interestingly, research shows that people who brag often *don't* feel as confident as they sound—psychological studies suggest bragging is sometimes a cover-up for insecurity, making the word capture a deeper human truth.
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