Definitions

1. adjective

not approved or officially sanctioned

“The unapproved changes to the project plan caused a delay in the deadline.”

2. noun

a thing that is not approved or officially sanctioned

“The unapproved software update was removed from the system to prevent security risks.”

3. adverb

in a way that is not approved or officially sanctioned

“The company was criticized for operating unapproved facilities in the region.”