A self-employed owner of an unincorporated business (called a proprietorship), or an owner of real estate. In the case of a proprietorship, the owner does not enjoy limited liability. All the assets and liabilities of the firm accrue to the proprietor.

Use proprietor in a sentence

You may find yourself being the sole proprietor on a job and all of the risk and reward is on your shoulders.

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Jim used to be the sole owner and proprietor of a liquor store, but the city council stripped him of his license because he sold alcohol to minors.

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As the proprietor of his own small restaurant Ricky enjoyed the freedom of being his own boss and not having to deal with the issues of a large corporate restaurant.

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proprietary trading independent trader