What is the origin of cruciverbalist?

Cruciverbalist is a combination of two Latin words—crux “cross” and verbum “word”—and in this way, it’s a direct translation of the word crossword using Latin elements. Crux is also the source of numerous words related to crosses or, more figuratively, focal points, such as crucial and excruciating, while verbum’s descendants include verbal, verbiage, and verbose, all of which pertain to words.