aiheista

Aiheista is the plural elative form of the Finnish noun aihe, meaning topic or subject. The elative case in Finnish expresses origin or reference and, in the plural form -ista/-istä, is commonly used to mean about or of topics in contexts of discussion, inquiry, or writing. Thus aiheista is typically translated as “about topics” or “on topics,” depending on the sentence.

In practice, aiheista appears after verbs that introduce discussion or description of topics, such as puhua (to talk about) and keskustella (to discuss). For example: Keskustelimme aiheista kuten ilmastonmuutoksesta ja teknologiasta, meaning “We discussed topics such as climate change and technology.” It can also appear with numerals or adjectives, as in useista aiheista (“about several topics”) or useista muista aiheista (“about other topics”).

Linguistic note: aihe is the base noun; singular elative is aiheesta (“from/about a topic”), and plural nominative is aiheet, with genitive plural being aiheiden. The elative plural form aiheista is thus a standard inflection used specifically to indicate topics in the sense of discussion, description, or inquiry.

See also: aihe, aiheesta, aiheet, aiheiden.