kesiään

Kesiään is a Finnish word that translates to "their summer" or "summers" depending on the context and grammatical case. It is the genitive, dative, or accusative singular form of the possessive suffix -nsä, when applied to the third person plural pronoun "he" (they). This suffix is attached to the noun indicating the summer. Therefore, "kesiään" literally means "their summer" in a possessive sense.

For example, in the sentence "Lapset nauttivat kesiään," which translates to "The children enjoyed their summer," "kesiään" indicates that the summer belongs to the children. The word is used to express possession or a relationship of belonging concerning the summer season for a group of people or things. Its grammatical function is to specify whose summer is being discussed. The specific meaning within these cases can also imply duration or experience.