Special K

proper noun

A breakfast cereal made primarily from rice and wheat.

Similar
Kjetsuper acidhoney oilgreencat valiumsuper C
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Meanings

proper noun
  1. A breakfast cereal made primarily from rice and wheat.

    He seemed better this morning; he had eaten two donuts and a bowl of Special K for breakfast.

    1980, Stephen King, The Mist, Viking Press
nounSpecial K (uncountable)
  1. slanguncountableKetamine, used as a hallucinogen.

    Yeah, it's called the euphoric blockbuster and it's supposed to make Special K look weak.

    1995, Harmony Korine, Kids, spoken by Fidget
    3 more examples

    Ketamine, a powerful anesthetic that acts on an entirely different neurotransmitter system (and which has been ingested in rave clubs as Special K) was recently the subject of a glowing study by the National Institute of Mental Health.

    2008 October, Paul Scott, “Was the Prozac revolution all in our heads?”, in Men's Health, volume 23, number 8, →ISSN, page 149

    The soul leaves the sedated body and is free to travel, according to the not-exact testimony of numerous drugged-out Special K abusers.

    2013, Chuck Palahniuk, Doomed, page 58

    Recreational users call it "special K," and the euphoric, hallucinatory experience it induces the "K-hole."

    [2018 May 8, Moises Velasquez-Manoff, “Ketamine Stirs Up Hope—and Controversy—as a Depression Drug”, in Wired

Synonyms & antonyms

nounstreet names for ketamine

Similar
Kjetsuper acidhoney oilgreencat valiumsuper C
Broader
ketamineketamine hydrochlorideKetalar
Also see
greenhoney oiljetkketamine

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

Initial of Kellogg Company. The drug was nicknamed humorously after the cereal because its name begins with the letter k, as also with the slang sense of vitamin K.

Full word history & related roots →
Cite this entry
APA

Special K. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Special%20K

MLA

“Special K.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Special%20K. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Special K,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Special%20K.

Source: Special K on Wiktionary, CC BY-SA 4.0.