keskeisista
Keskeisista is the elatiivi plural form of the Finnish adjective keskeinen, meaning central or essential. In Finnish grammar, adjectives agree with the nouns they modify in number and case, so keskeinen has several inflected forms including keskeiset (nominative plural), keskeisten (genitive plural), keskeisiä (partitive plural) and keskeisistä (elatiivi plural). Keskeisista is therefore used to mean “from the central/essential ones” or “of the central/essential ones” in contexts that require the elatiivi case.
In practice, keskeisista appears mainly in formal or academic Finnish when referring to core elements or factors
Etymologically, keskeinen is derived from keskus, meaning center. The -inen suffix forms an adjective, and the