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August 1, 2026Short & citedBlog
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Everyday Life • Food & Drink

Catsup

Catsup is a less common spelling of ketchup, usually referring to a seasoned tomato-based condiment.

Updated August 1, 20261 min readCited sources

Catsup is a less common spelling of ketchup, referring to a seasoned tomato-based condiment. In modern usage, the two words are generally treated as synonyms, though catsup is less common in English-language dictionaries and everyday use.

What it is

Catsup is an alternative spelling of ketchup that appears in modern dictionaries. It usually means the familiar tomato-based table condiment served with foods such as fries, burgers, and hot dogs. In present-day usage, there is no meaningful culinary difference between catsup and ketchup.

Why it matters

While catsup and ketchup are interchangeable today, the spelling history shows that catsup was used on some commercial products, including by Heinz in the late 19th century. Canadian English commonly uses ketchup, but both terms are understood. Understanding the variant helps avoid confusion when reading older labels or recipes.

Key details

Modern ketchup or catsup is typically made from tomatoes, vinegar, sugar, salt, and spices. The word itself traces back to older Southeast Asian sauce terms. The result is a thick, sweet-tangy sauce often served with fries, burgers, and poutine.

In short

  • Less common spelling of ketchup
  • Tomato-based condiment
  • Interchangeable in modern use
  • Historically used by Heinz and others
Canadian angle

Canadian English commonly uses ketchup rather than catsup, but both terms are understood as referring to the same tomato-based condiment.

Quick questions

What is catsup?
Catsup is a less common spelling of ketchup, usually meaning a tomato-based condiment.
Is catsup the same as ketchup?
Yes. Modern dictionaries treat catsup as a variant spelling of ketchup.
What is the difference between catsup and ketchup?
In modern use, there is usually no difference; both words normally refer to the same tomato condiment.

Sources

  1. Merriam-Websterhttps://www.merriam-webster.com/dictionary/catsup
    Supports: Defines catsup as a less common spelling of ketchup and a seasoned pureed condiment usually made from tomatoes.
  2. Cambridge Dictionaryhttps://dictionary.cambridge.org/dictionary/learner-english/catsup
    Supports: States catsup is another US spelling of ketchup.
  3. Dictionary.comhttps://www.dictionary.com/browse/catsup
    Supports: Defines catsup as a variant of ketchup.
  4. Encyclopaedia Britannicahttps://www.britannica.com/topic/ketchup
    Supports: Explains ketchup history, use of catsup as a former spelling, and tomato-based composition.
  5. Wiktionaryhttps://en.wiktionary.org/wiki/ketchup
    Supports: Provides etymology from Southeast Asian forms and notes catsup as an alternative Anglicization.
  6. Dictionary.comhttps://www.dictionary.com/browse/ketchup
    Supports: Defines ketchup as a tomato-based condiment and notes catsup as an alternate name.
  7. Merriam-Websterhttps://www.merriam-webster.com/dictionary/ketchup
    Supports: Defines ketchup as a seasoned pureed condiment usually made from tomatoes.