noun. a state of calm, collected control over oneself; poise. In martial French fencing, aplomb is not to brandish a weapon—not to be “en garde”—but to be perfectly prepared to do so. To have aplomb is to start no shit and always keep it a hundred. Aplomb is effortless and overwhelming rizz, both kind and dangerous.
She weathered his insults with aplomb. Only when he threatened violence did she act. The pace of her breath never changed, even as he breathed his last.
(acronym cqfd, but rarely used) : an offensive Quebec French phrase, which translated to English literally means an oafish, boorish, clumsy person who spectacularly fails at everything they do
(scene from Harry Potter and The Chamber of Secrets):
diary-released Tom Riddle : Harry, let me take you back in time, and show you who really opened The Chamber of Secrets the first time around.