Word.ws English Dictionary

KJ

KJ noun: phencyclidine (PCP); also, a marijuana cigarette laced with phencyclidine. Also the abbreviation of killjoy.

Noun

KJ (countable and uncountable, plural KJs)

  1. (US, slang) Phencyclidine (PCP); also, a marijuana cigarette laced with phencyclidine.
    • This was some other shit, what they smoked, could have been fucking angel dust sprinkled on, they called that KJ. Shit, knowing them that’s exactly why I couldn’t stop my head from bobbing, and why the streetlights were so fucking bright, and mean seeming, and, like, too red. I was glad I only hit...2018, Tommy Orange, “Calvin Jonhson”, in There There, New York, N.Y.: Vintage Books, →ISBN, page 92

Also used as

KJ is also the abbreviation of killjoy.

Synonyms of KJ

7 more synonymsFewer synonyms

All synonyms of KJ

Forms of KJ

pluralKJs

Origin of KJ

Probably an initialism of crystal (“phencyclidine”) + joint (“marijuana cigarette”).

Questions about KJ

What does KJ mean?
KJ means phencyclidine (PCP); also, a marijuana cigarette laced with phencyclidine.
What part of speech is KJ?
KJ is a noun.
What is the plural of KJ?
The plural of KJ is KJs.

Words near KJ in the dictionary

  1. Kiên Giang
  2. Kičevo
  3. Kiến An
  4. Kiến Thuỵ
  5. Kiến Thụy
  6. KJ
  7. Kjar
  8. Kjarposko
  9. Kjarposkos
  10. Kjars
  11. KJB

Source and license

Adapted from Wiktionary: KJ (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “KJ.” Word.ws, https://word.ws/kj. Based on Wiktionary, CC BY-SA 4.0.