copacetic
The origin and history of copacetic.
Etymology
Origin disputed — one theory credits novelist Irving Bacheller with coining it in 1919; another links it to African American vernacular of the early 20th century, popularized in part by dancer Bill "Bojangles" Robinson. No single explanation is proven.
Class of 1919
copacetic first entered the language around 1919. Other words from the same year:
See the full Class of 1919 →