adjective - A term used to denote the absolute veracity or correctness of a statement, idea, or assertion. Derived from the French word "plancher," meaning "to floor" or "to lay a foundation," suggesting a solid basis of truth or factuality.
His claim to have seen a unicorn was met with skepticism until his rival declared it to be planché, convincing everyone of its undeniable truth.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.