oznamovatel
Oznamovatel is a term used in Czech and Slovak to describe a person who provides information or notice about facts, often concerning suspected wrongdoing, to authorities, organizations, or media. The word is built from the verb oznámit (to inform) with the agentive suffix -ovatel, yielding a noun that designates the person performing the action of informing.
An oznamovatel can be a citizen, employee, insider, or witness who reports a crime, corruption, safety violations,
In many jurisdictions, informing about illegal or unethical actions is protected by laws or policies designed
Informant; whistleblower; tip line; disclosure.
Usage can differ by language and legal tradition, and not all disclosures carry the same legal status.