pyöreähköön

The Finnish word "pyöreähköön" is an inflected form of the adjective "pyöreähkö," which itself is a diminutive of "pyöreä." "Pyöreä" means round. The suffix "-hkö" or "-hähkö" in Finnish creates a diminutive meaning, implying "somewhat" or "rather." Therefore, "pyöreähkö" translates to "somewhat round" or "rather round."

The ending "-ön" in "pyöreähköön" indicates a case inflection. Specifically, it is the genitive singular case. In Finnish, the genitive case can express possession, but it is also used in many other contexts, such as after certain prepositions or as the object of certain verbs. When used as an adjective modifying a noun in the genitive case, "pyöreähköön" would agree with that noun. For example, if describing "the color of the somewhat round object," the word for "object" would be in the genitive case, and "pyöreähköön" would be the corresponding adjective form. However, "pyöreähköön" can also function as the genitive of the adjective itself when used nominally, meaning "of the somewhat round one." Without further context, the precise grammatical function of "pyöreähköön" depends on its use within a sentence.