\ ˈslag How to pronounce slag (audio) \

Definition of slag

 (Entry 1 of 3)

: the dross or scoria of a metal

Definition of slag (Entry 2 of 3)

slang, chiefly British
: a lewd or promiscuous woman


slagged; slagging

Definition of slag (Entry 3 of 3)

transitive verb

chiefly British
: to criticize harshly

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Synonyms & Antonyms for slag

Synonyms: Verb

Antonyms: Verb

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Examples of slag in a Sentence

Verb London reviewers slagged off the new play for being another kitchen-sink drama.

First Known Use of slag

Noun (1)

1552, in the meaning defined above

Noun (2)

circa 1958, in the meaning defined above


1971, in the meaning defined above

History and Etymology for slag

Noun (1)

Middle Low German slagge

Noun (2)

earlier argot slag coward, worthless person


probably from slag entry 2

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Statistics for slag

Time Traveler for slag

The first known use of slag was in 1552

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More Definitions for slag


\ ˈslag How to pronounce slag (audio) \

Kids Definition of slag

: the waste left after the melting of ores and the separation of the metal from them

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More from Merriam-Webster on slag

Thesaurus: All synonyms and antonyms for slag

Rhyming Dictionary: Words that rhyme with slag

Spanish Central: Translation of slag

Britannica.com: Encyclopedia article about slag

Comments on slag

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


to engage in dissolute behavior

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