Jäykissä
Jäykissä is the inessive plural form of the Finnish adjective jäykkä, meaning stiff or rigid. In Finnish, adjectives agree with the nouns they modify in number and case, and the inessive case denotes a location or state of being “in” something. When the noun is plural and inessive, the adjective takes the ending -issä, so jäykkä becomes jäykissä.
In usage, jäykissä describes physical stiffness, such as a body part or object, and can also be
Jäykissä is not a standalone noun but a grammatical form of jäykkä. Its degree forms follow normal
See also: Finnish grammar, adjective inflection, inessive case, jäykkä.
Notes: Because Finnish relies on case endings rather than prepositions, forms like jäykissä are common in descriptive