PROPRIETARY Synonyms: 18 Similar and Opposite Words

proprietary

adjective

Definition of proprietary

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.

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of proprietary Udon Fifty’s dark broth will be complemented by housemade noodles and tempura that’s lacquered with a proprietary blend. — Amy Drew Thompson, The Orlando Sentinel, 8 Oct. 2026 Today, with the White Sox doing so well, fans are casting about for ways to follow the game without busting the budget as access is proprietary. — Chicago Tribune, 8 Oct. 2026 But nuclear data itself is largely proprietary or protected by federal law. — Andrew Moseman, IEEE Spectrum, 8 Oct. 2026 The booming retail proprietary trading industry can make money even when its traders don’t. — Camila Grigera Naón, Fortune, 7 Oct. 2026 See All Example Sentences for proprietary

Recent Examples of Synonyms for proprietary

exclusive

Adjective

The Peacock streaming platform shares its weekly exclusive games on YouTube.

— Leo Barraclough, Variety, 15 Oct. 2026
The brand makes exclusive products for The Colony Hotel in Palm Beach.

— Lisa Lockwood, Footwear News, 15 Oct. 2026

Definition of exclusive

Browse Nearby Words

propping (up)

proprietary

proprieties

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“Proprietary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/proprietary. Accessed 20 Oct. 2026.

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Synonyms of proprietary

adjective

Example Sentences

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