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Proprietory vs. Proprietary — Which is Correct Spelling?

Edited by Tayyaba Rehman — By Fiza Rafique — Updated on March 26, 2024
"Proprietory" is an incorrect spelling, while "proprietary" is correct. Proprietary refers to ownership or rights exclusive to an owner or holder.
Proprietory vs. Proprietary — Which is Correct Spelling?

Which is correct: Proprietory or Proprietary

How to spell Proprietary?


Incorrect Spelling


Correct Spelling

Key Differences

Use the mnemonic: "I have a right, so 'I' use proprietary."
Visualize a sign that says "proprietary rights" to reinforce the correct spelling
"Proper" things have rights, so remember "proprietary."
Recall "property" and recognize the similarity in spelling to "proprietary."
Think of "proprietor," the person who has ownership, and just add "-y."

How Do You Spell Proprietary Correctly?

Incorrect: The company uses a proprietory blend of coffee beans.
Correct: The company uses a proprietary blend of coffee beans.
Incorrect: They offer a range of proprietory products not available elsewhere.
Correct: They offer a range of proprietary products not available elsewhere.
Incorrect: She filed a patent for her proprietory invention.
Correct: She filed a patent for her proprietary invention.
Incorrect: The formula for the medicine is kept proprietory.
Correct: The formula for the medicine is kept proprietary.
Incorrect: Their software is based on proprietory technology.
Correct: Their software is based on proprietary technology.

Proprietary Definitions

Proprietary refers to something owned exclusively.
The software has a proprietary license, restricting its distribution.
Proprietary can refer to a product made for and sold under a specific retailer's name.
The store offers a proprietary brand of kitchenware.
Proprietary describes the exclusive rights or ownership of something.
The proprietary blend in this supplement is a trade secret.
Proprietary emphasizes the rights reserved by the owner or patent-holder.
The artist holds proprietary rights to her music.
Of or relating to a proprietor or to ownership
Had proprietary rights.
Privately owned, as a business
A proprietary hospital.
Owned by a private individual or corporation under a trademark or patent
A proprietary drug.
A proprietor or group of proprietors.
Ownership; proprietorship.
A proprietary medicine.
One granted ownership of a proprietary colony.
Of or relating to property or ownership.
Proprietary rights
Owning something; having ownership.
The proprietary class
Created or manufactured exclusively by the owner of intellectual property rights, as with a patent or trade secret.
The continuous profitability of the company is based on its many proprietary products.
Nonstandard and controlled by one particular organization.
A proprietary extension to the HTML standard for Web page structure
Privately owned.
A proprietary lake; a proprietary chapel
Possessive, jealous, or territorial.
A proprietor or owner.
A body of proprietors, taken collectively.
The rights of a proprietor.
A monk who had reserved goods and belongings to himself, notwithstanding his renunciation of all at the time of profession.
(espionage) A company doing legitimate business while also serving as a front for espionage.
A proprietor or owner; one who has exclusive title to a thing; one who possesses, or holds the title to, a thing in his own right.
A body proprietors, taken collectively.
A monk who had reserved goods and effects to himself, notwithstanding his renunciation of all at the time of profession.
Belonging, or pertaining, to a proprietor; considered as property; owned; as, proprietary medicine.
An unincorporated business owned by a single person who is responsible for its liabilities and entitled to its profits
Protected by trademark or patent or copyright; made or produced or distributed by one having exclusive rights;
`Tylenol' is a proprietary drug of which `acetaminophen' is the generic form
Proprietary indicates a product or component made and marketed by one company.
That's a proprietary part made only by this manufacturer.

Proprietary Meaning in a Sentence

The firm developed a proprietary algorithm that predicts market trends.
She holds several patents for her proprietary inventions in renewable energy.
Many companies use proprietary technology to gain a competitive edge.
The chef wouldn't share his proprietary recipe for the signature dish.
Their proprietary blend of spices is a closely guarded secret.
Proprietary data can give businesses valuable insights into consumer behavior.
The laboratory uses proprietary methods for its research on genetic disorders.
They launched a proprietary app to improve customer service.
The company's proprietary materials make their products uniquely durable.
Universities sometimes develop proprietary programs for specialized studies.
Using proprietary components can make repairing electronics more difficult.
The company maintains a proprietary database of its customers' preferences.
The beverage company's proprietary formula has remained unchanged for decades.
Their proprietary approach to online marketing has been very successful.
The team is working on a proprietary project that could revolutionize the industry.
His book includes proprietary techniques for improving personal productivity.
Artists can create proprietary works that are protected by copyright.
The proprietary nature of the software means it's not available for public use.
Manufacturers often claim that their proprietary blends offer superior benefits.
The firm holds a proprietary interest in the patented technology.
The product's proprietary design makes it stand out in the market.
Proprietary information is often protected by non-disclosure agreements.
The seminar offers insights into managing proprietary funds effectively.
She developed a proprietary method for teaching language to children.

Common Curiosities

Which vowel is used before proprietary?

The vowel "a" is commonly used before proprietary, as in "a proprietary formula."

What is the verb form of proprietary?

Proprietary is an adjective. The related verb might be "own" or "possess," but they aren't direct verb forms of proprietary.

What is the pronunciation of proprietary?

It is pronounced as [pruh-prahy-i-ter-ee].

What is the root word of proprietary?

The root word is "proprietor."

What is the plural form of proprietary?

Proprietary is an adjective and doesn't have a plural form.

Why is it called proprietary?

It's derived from "proprietor," meaning one who has ownership or rights.

Which article is used with proprietary?

Both "a" and "the" can be used, e.g., "a proprietary system" or "the proprietary rights."

Is proprietary a noun or adjective?

Proprietary is an adjective.

Is proprietary an adverb?

No, proprietary is not an adverb.

Is proprietary an abstract noun?

No, it's an adjective describing ownership or exclusive rights.

Which conjunction is used with proprietary?

Any conjunction can be used with "proprietary" based on the sentence structure.

Is proprietary a vowel or consonant?

"Proprietary" is a word containing both vowels and consonants.

Which preposition is used with proprietary?

"Of" can be used, as in "proprietary of."

How many syllables are in proprietary?

There are five syllables.

How do we divide proprietary into syllables?

It's divided as pro-pri-e-tar-y.

What is another term for proprietary?


Which determiner is used with proprietary?

Determiners like "this," "that," or "a" can be used with proprietary.

What is the singular form of proprietary?


Is proprietary a collective noun?

No, it's an adjective.

What part of speech is proprietary?

Proprietary is an adjective.

What is the second form of proprietary?

Proprietary doesn't have verb forms, so there's no second form.

Is proprietary a negative or positive word?

It's neutral, though context can give it positive or negative connotations.

Is the proprietary term a metaphor?

No, "proprietary" is not used as a metaphor.

What is the opposite of proprietary?

Open-source or public.

Is proprietary a countable noun?

Proprietary is an adjective and not a noun, so it isn't countable.

Is the word proprietary imperative?

No, it's not an imperative verb.

What is the first form of proprietary?

Proprietary is an adjective and doesn't have verb forms.

What is the third form of proprietary?

Same as above; proprietary doesn't have verb forms.

How is proprietary used in a sentence?

"The company developed a proprietary software solution for their clients."

What is the stressed syllable in proprietary?

The third syllable, "e," is stressed.

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Author Spotlight

Written by
Fiza Rafique
Fiza Rafique is a skilled content writer at, where she meticulously refines and enhances written pieces. Drawing from her vast editorial expertise, Fiza ensures clarity, accuracy, and precision in every article. Passionate about language, she continually seeks to elevate the quality of content for readers worldwide.
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.

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