hallucinogen

/ˌhæl.uːˈsɪn.ə.dʒən/

//ˌhæl.uːˈsɪn.ə.dʒən// noun

"hallucinogen" is a 12-letter English headword indexed on PlainSpell.

The verdict

“hallucinogen” is uncommon English (frequency #75,936 among 2,646 “H” headwords), classed as a noun. The kind of spelling people second-guess.

#75,936
frequency rank, English
2,646
“H” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any substance tending to induce hallucination.

Corpus desk

Index EN-hallucinogen · hallucinogen · English

hallucinogen · rank #75,936 · 0 variants · 0 confusables

  • FREQ-RARE #75,936
  • LEN-MEGA 12 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,646
  • PHOTO-FINISH Halleck

Nearest frequency peer: Halleck (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Long-tail ranks near “hallucinogen”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “hallucinogen” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for hallucinogen
PropertyValue
Headwordhallucinogen
LanguageEnglish
Part of speechNoun
IPA/ˌhæl.uːˈsɪn.ə.dʒən/
Letters12
Frequency rank#75,936
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “hallucinogen” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).hallucinogenfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “Halleck” (#75,935), “handmaid” (#75,938), “hackles” (#75,932). Among 2,646 “H” headwords, “hallucinogen” is #75,936. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

hallucinogen is uncommon English at frequency #75,936 among 2,646 “H” headwords, classed as anoun, transcribed /ˌhæl.uːˈsɪn.ə.dʒən/. Rarity is why readers land here mid-draft. Gloss: "Any substance tending to induce hallucination.".

hallucinogen has no tracked misspelling variants, typically a sign the spelling maps closely to how the word sounds. It is not paired with a close-neighbour confusable in our dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From hallucination + -o- (interconsonantal) + -gen (“producer”). The correct English form is hallucinogen, spelled H-A-L-L-U-C-I-N-O-G-E-N.

Definition

  1. 1
    Any substance tending to induce hallucination.

Etymology

From hallucination + -o- (interconsonantal) + -gen (“producer”).

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "hallucinogen"?
"hallucinogen" is spelled H-A-L-L-U-C-I-N-O-G-E-N. The IPA pronunciation is /ˌhæl.uːˈsɪn.ə.dʒən/.
What does "hallucinogen" mean?
As a noun, "hallucinogen" means: Any substance tending to induce hallucination.
How do you pronounce "hallucinogen"?
The IPA (International Phonetic Alphabet) transcription for "hallucinogen" is /ˌhæl.uːˈsɪn.ə.dʒən/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "hallucinogen"?
From hallucination + -o- (interconsonantal) + -gen (“producer”). See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "hallucinogen", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 12 letters (nearest by frequency rank).

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list