läheisimmissä
The Finnish word "läheisimmissä" is the inessive plural form of the adjective "läheisin." "Läheisin" itself is the superlative form of the adjective "läheinen," meaning "close" or "near." Therefore, "läheisimmissä" translates to "in the closest" or "among the closest."
This word is used in Finnish to indicate proximity, either physically or relationally. For example, one might