Todistettu

Todistettu is a Finnish adjective formed from the past passive participle of the verb todistaa, meaning “to prove” or “to testify.” It denotes that something has been proven, verified, or documented on the basis of evidence. In usage it often refers to claims, findings, or information that has undergone validation, for example todistetut todisteet (the proven evidence) or todistettu tutkimustulos (the verified study result).

Grammatically, todistettu functions as an attributive or predicative adjective and agrees with the noun in number and case. It is commonly found in scientific, legal, and media language, where it signals a higher level of certainty than unverified statements. For instance, researchers may present todistetut tulokset (the verified results) to indicate that conclusions have been supported by data and analysis.

Etymologically, the word is derived from todistaa, “to prove,” with the suffix -ttu forming the past passive participle. This construction is typical in Finnish for creating adjectives that describe the factual status of a noun.

In contemporary Finnish, todistettu conveys a strong evidential status. It is most appropriate when there is objective confirmation from tests, observations, or authoritative sources. In everyday speech, the term may be used more loosely, but its precise sense remains “proven” or “documented” rather than merely claimed.