[DrFalkyn]

It’s one word, like watchmaker or bookkeeper are in English.

[umanwizard]

What is your definition of “word”? This is not at all a simple question in linguistics. By the way, it can’t just be “written without spaces”, as languages with no writing system at all, and languages whose writing system has no spaces (like Chinese), still have various concepts of “word”.

[immibis]

Fun fact: when writing on a smartphone in German, autocorrect lets you chain words indefinitely