This is the 11552nd most frequent Swedish word.
olovlig
"Illegal" or "unlawful."
Olovligt is used to describe an action (parking here) that is not permitted by law or rules, translating to 'illegal' or 'unlawful.'
Det är olovligt att parkera här utan tillstånd.
It is illegal to park here without a permit.
Olovlig here refers to an act (driving) taking place without the required license or permission, indicating 'unlicensed' or 'unlawful.'
Han blev åtalad för olovlig körning.
He was charged with unlicensed driving.
Olovlig is applied to an action (breaking into a house) that is against the law, thus characterized as 'unlawful' or 'illegal.'