proprietary: meaning, definition, pronunciation and examples
C1Formal, Business, Legal, Technical
Quick answer
What does “proprietary” mean?
Relating to ownership or the rights of an owner, especially an individual or company that possesses exclusive legal rights to something.
Audio
Pronunciation
Definition
Meaning and Definition
Relating to ownership or the rights of an owner, especially an individual or company that possesses exclusive legal rights to something.
Referring to something (like a product, technology, or system) that is owned and controlled by a particular company, making its use, distribution, or modification legally restricted. Also describes an attitude of behaving as if one owns something.
Dialectal Variation
British vs American Usage
Differences
Minimal semantic difference. Spelling is identical. Slight potential for higher frequency in UK contexts regarding historical land and title law, but the business/tech usage is dominant in both.
Connotations
In both varieties, the connotations are context-dependent: positive in commercial branding (e.g., 'proprietary blend'), negative in open-source tech communities (e.g., 'proprietary software').
Frequency
Comparable frequency in both dialects, heavily concentrated in business, legal, and computing domains.
Grammar
How to Use “proprietary” in a Sentence
[Adjective] + proprietary + [Noun] (e.g., patented proprietary technology)[Verb] + proprietary + [Noun] (e.g., develop a proprietary system)[Noun] + of + proprietary + [Noun] (e.g., a claim of proprietary rights)Vocabulary
Collocations
Examples
Examples of “proprietary” in a Sentence
verb
British English
- [Verb form extremely rare and obsolete. Not used in modern English.]
American English
- [Verb form extremely rare and obsolete. Not used in modern English.]
adverb
British English
- [The adverbial form 'proprietarily' exists but is exceedingly rare and awkward.]
American English
- [The adverbial form 'proprietarily' exists but is exceedingly rare and awkward.]
adjective
British English
- The company guards its proprietary manufacturing process closely.
- He was accused of taking a rather proprietary attitude towards the project.
American English
- The software uses a proprietary file format that other programs can't read.
- The recipe is based on a proprietary blend of herbs and spices.
Usage
Meaning in Context
Business
Used to describe a company's unique assets, e.g., 'Our proprietary algorithm gives us a market edge.'
Academic
Used in law (property rights), economics (market power), and computer science (software licensing).
Everyday
Rare in casual conversation. Might appear in news about tech companies or product labels.
Technical
Core term in information technology contrasting 'proprietary' with 'open-source' or 'free' software.
Vocabulary
Synonyms of “proprietary”
Strong
Neutral
Weak
Vocabulary
Antonyms of “proprietary”
Watch out
Common Mistakes When Using “proprietary”
- Mispronouncing it as 'pro-PREE-uh-terry'.
- Using it as a synonym for 'expensive' or 'high-quality' without the element of exclusive legal ownership.
- Confusing 'proprietary' (adj.) with 'proprietor' (noun, the owner).
FAQ
Frequently Asked Questions
It is neutral but context-dependent. In marketing, it's positive (implies unique value). In tech/legal debates, it can be negative (implies restrictive control).
'Patented' is a specific legal status granted by a government. 'Proprietary' is broader; it can refer to anything owned exclusively (trade secrets, trademarks, copyrighted material), which may or may not be patented.
Yes, though less common. E.g., 'He was very proprietary about his ideas,' meaning he acted as if he owned them exclusively and was possessive.
The most common opposite is 'open-source software' (where the source code is freely available). Other opposites include 'free software', 'public domain software', or simply 'non-proprietary software'.
Relating to ownership or the rights of an owner, especially an individual or company that possesses exclusive legal rights to something.
Proprietary is usually formal, business, legal, technical in register.
Proprietary: in British English it is pronounced /prəˈpraɪ.ə.tər.i/, and in American English it is pronounced /prəˈpraɪ.ə.ter.i/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms. The word is used literally.]”
Learning
Memory Aids
Mnemonic
Think of a PROPRIETOR (an owner) + '-ary'. Proprietary things belong to a specific proprietor (owner/company).
Conceptual Metaphor
OWNERSHIP IS A CONTAINER (The proprietary knowledge/technology is 'held inside' the company, sealed from others).
Practice
Quiz
In which context is 'proprietary' most likely to have a NEGATIVE connotation?