catsup
Word family
- ketchupnounA2
Synonym discussion
Sense: noun/1
Catsup and ketchup are the same condiment — a thick, sweet-and-sour tomato sauce used on burgers, hot dogs, and fries. Ketchup is the dominant spelling worldwide, while catsup is an older variant that survives mainly in American English, especially on restaurant tables and in brands like Heinz (though Heinz labels say 'Ketchup'). Tomato sauce in British English refers to the same bottled condiment; in American English it means a plain cooked tomato purée used in cooking (e.g. in pasta sauce or soup), not the vinegar-spiced condiment. A British learner writing 'tomato sauce' for the condiment would be understood; an American learner would need 'ketchup' or 'catsup'.
Common collocations
Etymology
Catsup entered English in the late 1600s, probably from the Chinese (Hokkien) kê-tsiap, a fermented fish sauce. British colonists encountered it in Southeast Asia and brought the word back to England, where it gradually evolved into a tomato-based condiment by the 1800s. The spelling catsup was common in 19th-century American English; ketchup later won out as the standard form worldwide.