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Synonyms

goop

1 American  
[goop] / gup /

noun

Informal.
  1. a bad-mannered or inconsiderate person; clod; boor.


goop 2 American  
[goop] / gup /

noun

Slang.
  1. a viscous or sticky substance; goo.


goop British  
/ ɡuːp /

noun

  1. a rude or ill-mannered person

  2. any sticky or semiliquid substance

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of goop1

Expressive coinage, apparently first used by Gelett Burgess in his book Goops and How to Be Them (1900)

Origin of goop2

1955–60; expressive coinage akin to glop, gook 1, etc.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Two problems: At the time, renewable energy cost too much to make it affordable, and adding water usually turns quicklime into an unwieldy goop.

From The Wall Street Journal • Mar. 27, 2026

Chef endorsements are probably doubly important for fake cheese, since people know it today as disappointing goop.

From Salon • Aug. 19, 2024

And in that goop is where our show lives.

From New York Times • Feb. 1, 2024

Train cars on the tunnel’s custom-built rail line carried the muck to a drop shaft in Ballard, where a crane with a clamshell bucket grabbed the goop.

From Seattle Times • Jun. 27, 2023

He gave Doon a tool belt, too, in which were wrenches and hammers, spools of wire and tape, and tubes of some sort of black goop.

From "The City of Ember" by Jeanne DuPrau

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