valheisiin

Valheisiin is the illative plural form of valhe, meaning lie or falsehood. In Finnish, the illative case expresses direction or target, and in this word it typically marks what a person believes in or is exposed to. Thus valheisiin is used to refer to lies or false statements as something one can believe in or be influenced by.

The most common use is with verbs that describe belief or perception, especially uskoa, meaning “to believe.” In phrases like uskoa valheisiin, valheisiin functions as the content of belief. Valheisiin can also appear in contexts discussing exposure to misinformation or propaganda, where people may be led to accept falsehoods.

Grammatically, valheisiin is formed from valhe (lie) plus the illative plural suffix -iin. It contrasts with forms such as valheet (lies) in the nominative or other grammatical cases.

In usage, valheisiin refers specifically to lies or falsehoods rather than merely to errors, though everyday language can blur the distinction between a false statement and a mistaken belief. Related terms include valhe (lie), valheellinen (false or deceitful), and väärä tieto (false information).