Plural of goop; sticky, messy, or unpleasant semi-liquid substances.
From 'goop', likely onomatopoetic in origin, mimicking the sound or feeling of thick sticky material. First recorded in American English in the early 20th century.
Goop was originally trademarked as a cleaning product in 1946—it was so successful that 'goop' became the generic word for any sticky cleaning substance.
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