This is the 527th most frequent Slovak word.
trestné
"Criminal" or "penal."
Here, 'trestné' modifies 'oznámenie' (complaint), describing it as pertaining to a criminal matter.
Trestné oznámenie bolo podané na polícii.
A criminal complaint was filed with the police.
In this sentence, 'trestné' describes the potential nature of an action, qualifying it as being related to a criminal offense.
Môže to byť trestné, ak porušíte zákon.
It can be criminal if you break the law.
Here, 'trestné' modifies 'činy' (offenses), qualifying them as criminal in nature.