as in exclusive
belonging to only one person, unit, or group and not used by or available to others The restaurant's proprietary recipe for barbecue sauce is only known to the head chef.

Synonyms & Similar Words


Antonyms & Near Antonyms

Thesaurus Entries Near proprietary

Cite this Entry

“Proprietary.” Thesaurus, Merriam-Webster, Accessed 2 Mar. 2024.

More from Merriam-Webster on proprietary

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!