sisältäytyy

sisältäytyy is a Finnish verb form that appears in older or literary texts. It is the third‑person singular present indicative of the verb sisältäytyä, which is a rarely used word meaning “to be contained,” “to be included” or “to happen internally.” The verb stem sisältä refers to “inside” or “within,” and the suffix –ytyä functions similarly to the verb ending –ilehtäjä “to grow like a flower” in other Finnish reflexive verbs, turning the sense into a state of being inside. Consequently, sisältäytyy can be translated as “he/she/it contains itself,” “it includes itself” or “it remains within.”

The word is mainly found in legal or formal historical documents, where it describes the inclusion of rights, duties or provisions within a larger text or framework. An example is a clause stating that certain conditions sisältäytyy in the final contract. In everyday Finnish, the more common words sisältyy or sisättyä are used instead of sisältäytyy.

Etymologically, sisältäytyä is derived from the root sisä‑, meaning “inner” or “internal,” combined with the morphological pattern of verb‑forming suffixes that indicate passive or self‑reflexive action. The term is not part of modern spoken Finnish and is usually encountered only in literary or archival contexts or when studying the development of Finnish legal terminology.