\ ˈslīm How to pronounce slime (audio) \

Definition of slime

 (Entry 1 of 2)

1 : soft moist earth or clay especially : viscous mud
2 : a viscous, glutinous, or gelatinous substance: such as
a : a mucous or mucoid secretion of various animals (such as slugs and catfishes)
b : a product of wet crushing consisting of ore ground so fine as to pass a 200-mesh screen
3 US, informal : a morally repulsive or odious person


slimed; sliming

Definition of slime (Entry 2 of 2)

transitive verb

1 : to smear or cover with slime
2 : to remove slime from (something, such as fish for canning)

intransitive verb

: to become slimy

Keep scrolling for more

Synonyms for slime

Synonyms: Noun

guck (or gook), mire, muck, mud, ooze, slop, sludge, slush

Visit the Thesaurus for More 

Examples of slime in a Sentence


Green slime covers the surface of the pond. She thinks men are slime.

Recent Examples on the Web: Noun

Marvel at magnets, walk on eggs, make slime, and more., "Calendar: Learn how to sell stuff safely online Tuesday in Lake Forest," 18 June 2019 By contrast, K-beauty—Korean products like snail-slime masks or starfish-extract cream—has faded. Jacky Wong, WSJ, "Beauty Stocks’ Rise Is Looking Increasingly Cosmetic," 21 June 2018 Artillery, bird’s nest and slime fungus are common. Jo Ellen Meyers Sharp, Indianapolis Star, "The Hoosier Gardener: Weather prime for fungus problems," 28 June 2019 For some, that meant kid-focused content like slime videos, but many others took it to mean including kids in their videos. Julia Alexander, The Verge, "YouTube can’t remove kid videos without tearing a hole in the entire creator ecosystem," 21 June 2019 Instagram subcultures are aplenty (meme accounts, teen slime videos, etc.) but an underrated subculture are the burgeoning jewelry makers around the world. Michelle Li, Teen Vogue, "Five Cool Things I Found On Instagram This Week," 21 June 2019 From slime green dresses to sheer trench coats, there's a fun (and affordable) piece for you somewhere in the mix ahead. Eliza Huber,, "Summer's Top Trends Are Hiding In Zara's Best-Sellers List," 20 June 2019 Other activities include make-your-own bubble mix, a tie-dye station, testing of the properties of different slime recipes and paint-ball catapults. Susan Dunne,, "Ooey, gooey, slimy, grimy: It’s a 2-day Mess Fest for kids at CT Science Center," 19 June 2019 In parts of the ocean, little life remains but green slime. Stephen Leahy, National Geographic, "One million species at risk of extinction, UN report warns," 6 May 2019

Recent Examples on the Web: Verb

All over Africa, anyone is free to slime the opposition. The Economist, "How African governments try to control what is said online," 19 Apr. 2018 The media has been in training—and often paid—to slime me and to slander me for years. Belinda Luscombe, Time, "Rose McGowan on Her 'Brave' New Book and Surviving the 'Cult of Hollywood'," 1 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'slime.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of slime


before the 12th century, in the meaning defined at sense 1


1628, in the meaning defined at transitive sense 1

History and Etymology for slime


Middle English, from Old English slīm; akin to Middle High German slīm slime, Latin limus mud — more at lime

Keep scrolling for more

Learn More about slime

Statistics for slime

Last Updated

17 Jul 2019

Look-up Popularity

Time Traveler for slime

The first known use of slime was before the 12th century

See more words from the same century

Keep scrolling for more

More Definitions for slime



English Language Learners Definition of slime

: a thick, slippery liquid
US, informal : a very bad, unpleasant, or dishonest person


\ ˈslīm How to pronounce slime (audio) \

Kids Definition of slime

1 : soft slippery mud
2 : a soft slippery material (as on the skin of a slug or catfish)

Keep scrolling for more

More from Merriam-Webster on slime

Rhyming Dictionary: Words that rhyme with slime

Thesaurus: All synonyms and antonyms for slime

Spanish Central: Translation of slime

Nglish: Translation of slime for Spanish Speakers

Britannica English: Translation of slime for Arabic Speakers Encyclopedia article about slime

Comments on slime

What made you want to look up slime? Please tell us where you read or heard it (including the quote, if possible).


food or victuals

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!