täytytään
täytytään is a form of the Finnish verb täytyy, which expresses necessity or obligation. The word tá° is the third person plural passive form, meaning “they must” or “it must be”. In everyday speech, it is often used to refer to an unspecified subject or to express a general assumption about what is likely or required, such as “täytytään myöhässä” meaning “they must be late” or “it must be late”. It can also convey a conjecture when the speaker is not certain, e.g. “tanskalaiset ovat saattaneet joutua vahinkoon, täytytään, että he tulivat tuhoon.” This usage aligns with the passive construction in Finnish, where the subject is either omitted or replaced by an indefinite pronoun.
Grammatically, täytyy is derived from the verb tykö, a non-productive auxiliary used to form necessity. The
In contrast to the more specific kolmiviis, which indicates knowledge from a direct source, täytyy-ʹtään expresses