proprietary
Definitions
Relating to an owner or ownership; held as private property.
Manufactured and sold by a particular company under a trademark or patent.
Relating to a product that is protected by secrecy or copyright and cannot be used or copied without permission.
Examples
The software company uses a proprietary algorithm to protect its data from competitors.
The chef refused to share the recipe, claiming it was a proprietary blend of secret spices.
Synonyms
exclusive privately owned patented copyrighted controlled restricted
Antonyms
public non-proprietary open source unrestricted common generic