Toistunut

Toistunut is a Finnish adjective formed from the verb toistua, meaning to recur or to happen again. As a past participle, toistunut functions as an adjective meaning "repeated" or "recurring" and is used to describe events, phenomena, or patterns that have occurred more than once.

Usage: In medical or scientific writing, one might refer to "toistuneet oireet" (recurrent symptoms) or "toistuneet havainnot" (repeated observations). In literature or everyday language, "toistunut teema" means a recurring theme. The phrase can also appear in constructions like "toistunut virhe" or "toistuneet virheet" (a repeated/recurred mistake).

Morphology: The form agrees with the noun it modifies: singular nominative "toistunut" + noun (toistunut virhe); plural "toistuneet virheet." In genitive, "toistuneen virheen" (of the repeated error).

Relation to related terms: toisto = repetition/noun; toistaa = to repeat; toistuva = recurring or repetitive. Distinction between "toistunut" (having occurred again) and "toistuva" (recurrent).