tahallisiin

Tahallisiin is the illative plural form of the Finnish adjective tahallinen, meaning intentional or deliberate. It is used when the noun it modifies is plural and in the illative case, for example tahallisiin tekoihin or tahallisiin tarkoituksiin, to express reference to deliberate actions or purposes.

In Finnish grammar, tahallisiin signals intentionality and contrasts with tahaton (unintentional) or tuottamuksellinen (negligent). The term is common in legal, criminological, and academic writing, where the concept of tahallisuus (intent) is a key element in assessing culpability. The form appears mainly in written language and in contexts that require precise grammatical agreement, such as legal descriptions, analyses, or translations.

In legal contexts, tahallisuus distinguishes liability based on the mental state of the actor. Tahalliset rikokset are crimes committed with deliberate intent, whereas other forms of wrongdoing may involve negligence or recklessness. The illative form tahallisiin often occurs in phrases describing actions carried out with purposeful aims, and it is frequently found in statutory language, court summaries, and scholarly discussions rather than everyday speech.

Related terms include tahallinen (intentional) and tahallisuus (intent). The concept is contrasted with tahaton (unintentional) and tuottamuksellinen (negligent) within Finnish criminal law, where mens rea, or the mental element, is used to determine the appropriate degree of responsibility under the rikoslaki (Criminal Code).