Synonyms of proprietary

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.

Related Words

• exclusive
• single
• sole
• personal
• unshared
• private

Dissimilar Words

• multiple
• public
• common
• joint
• cooperative
• mutual
• communal
• pooled
• shared
• conjoint
• united
• nonexclusive

Example Sentences

Recent Examples of proprietary

Unveiled at the 2026 Pennsylvania Defense and Innovation Summit, the new system, called MRLN, combines autonomous navigation with human oversight and can operate across the company’s proprietary vessel designs. — Aamir Khollam, Interesting Engineering, 14 July 2026

Lastly, the brand’s proprietary hyaluroset complex (a botanical alternative to hyaluronic acid) delivers 24-hour hydration, per the brand, giving skin a soft, plump finish. — Alyssa Morin, InStyle, 12 July 2026

Tensions between the two tech companies have strained their relationship, as the race to develop AI products has intensified competition for talent and proprietary technology. — Stephen Nellis, USA Today, 11 July 2026

But the bank added that BrainCo's proprietary sensors, AI decoding algorithm and commercialization record give the company an edge. — Elaine Yu, CNBC, 11 July 2026