Merriam-Webster's Word of the Day for March 29, 2024 is:
braggadocio • \brag-uh-DOH-see-oh\ • noun
Braggadocio refers to brash and self-confident boasting—that is, the annoying or exaggerated talk of someone who is trying to sound very proud or brave.
// His braggadocio hid the fact that he felt personally inadequate.
Examples:
“In total, Lil Wayne has sold more than 120 million albums, making him one of the world's top-selling artists, and, his braggadocio aside, he's widely considered one of most influential hip-hop artists of his generation and one of the greatest rappers of all time.” — L. Kent Wolgamott, The Lincoln (Nebraska) Journal Star, 1 Feb. 2024