ymmärränkö
ymmärränkö is a Finnish word that translates to "do I understand?" or "do you understand?" depending on the context and the intended subject. It is formed by combining the verb "ymmärtää" (to understand) with the interrogative particle "kö". The particle "kö" is suffixed to the word to turn a statement into a question.
In its most common usage, "ymmärränkö?" is a question directed at oneself, expressing a moment of self-doubt
The word is a good example of Finnish agglutination, where grammatical elements are added to a root