PROPRIETARY Synonyms: 18 Similar and Opposite Words

proprietary

adjective

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 Ground your content in internal case studies, proprietary client data and unique surveys. —

Uri Samet, Forbes.com, 28 May 2026 Later amendments also addressed concerns from Senate Republicans, Secure AI, Anthropic and the Illinois Emergency Management Agency by clarifying third party qualifications, what the audit should include and protocols for protecting proprietary information. —

Jenna Schweikert, CBS News, 28 May 2026 Oura is also focused on connected care with the partners to turn health insights into action — in partnership with Counsel Health to create on-demand care with its Oura Advisor, with its proprietary AI model focused on women’s health. —

Kanika Talwar, Footwear News, 28 May 2026 On the salary side, employers have long used proprietary benchmarking data to price their workforce with precision. —

Ascend Agency, Chicago Tribune, 27 May 2026 See All Example Sentences for proprietary

Recent Examples of Synonyms for proprietary

exclusive

Adjective

Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content.

— Tim Stelloh, NBC news, 30 May 2026
Thankfully for anyone seeking clarity, the Washington Post was able to explain exactly what the president has in mind, and when, after getting an exclusive statement from a Freedom 250 rep.

— Chris Willman, Variety, 30 May 2026