noun
goo
goo
noun
1
A sticky, gummy, or slimy semi-liquid substance of unclear or unpleasant composition.
"The old glue had turned into a sticky goo at the bottom of the jar."
"Green goo oozed out from under the fridge."
2
Overly sentimental or sappy talk or emotion.
"The movie's ending was pure goo, with everyone crying and hugging."
How to Use Goo
Learner’s notesIn plain EnglishA sticky, gross substance — or, figuratively, over-the-top sentimentality.
Common pairings
sticky goo
green goo
Word Forms
gooed past tense, gooed past tense, goos plural, goos plural, Goos plural, goos singular, goos singular
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The old glue had turned into a sticky _____ at the bottom of the jar.
Etymology
American English, attested since the early 1900s, possibly from "burgoo" (a thick porridge) or as an alteration of "glue."