unauthorised

3 definitions • 7 examples

without someone's official permission to do something or be in a particular place:

Unauthorized personnel are not admitted beyond this point.

This unauthorized biography of the star has sold over 10,000 copies in its first week in print.

without official permission:

an unauthorized biography

An unauthorized version of the software is being sold abroad.

not officially allowed:

He concealed huge losses made from unauthorized trading on Asian futures markets.

Unauthorized entry into the United States is illegal, but being in the country after having entered illegally is not necessarily a crime.

The company has started to more aggressively prosecute unauthorized use of its technology.