irrationalist

noun

"irrationalist" is a 13-letter English headword indexed on PlainSpell.

The verdict

“irrationalist” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
13
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - One who is irrational in their beliefs or ideas.

Corpus desk

Index EN-irrationalist · irrationalist · English

irrationalist · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 13 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "I" thin
  • PHOTO-UNK Peer pending

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.

Key facts for irrationalist
PropertyValue
Headwordirrationalist
LanguageEnglish
Part of speechNoun
Letters13
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “irrationalist” in English

irrationalistfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

irrationalist is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

No misspelling variants are generated for irrationalist in our index, suggesting the orthography follows predictable English patterns. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From irrational + -ist. The correct English form is irrationalist, spelled I-R-R-A-T-I-O-N-A-L-I-S-T.

Definition

  1. 1
    One who is irrational in their beliefs or ideas.
  2. 2
    A follower of irrationalism.

Etymology

From irrational + -ist.

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "irrationalist"?
"irrationalist" is spelled I-R-R-A-T-I-O-N-A-L-I-S-T.
What does "irrationalist" mean?
As a noun, "irrationalist" means: One who is irrational in their beliefs or ideas.
What is the origin of the word "irrationalist"?
From irrational + -ist. 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.

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

Source: FrequencyWords open word-frequency list