irrationalism
"irrationalism" is a 13-letter English headword indexed on PlainSpell.
The verdict
“irrationalism” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 13
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A philosophical movement formed as a cultural reaction against positivism in the early 20th century.
| Property | Value |
|---|---|
| Headword | irrationalism |
| Language | English |
| Part of speech | Noun |
| Letters | 13 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “irrationalism” sits in English frequency
Spelling & Dictionary Insight
The English entry for irrationalism is 13 letters long, classified as a noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "A philosophical movement formed as a cultural reaction against positivism in the early 20th century.".
We couldn't generate a plausible misspelling set for irrationalism, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From irrational + -ism. The correct English form is irrationalism, spelled I-R-R-A-T-I-O-N-A-L-I-S-M.
Definition
- 1A philosophical movement formed as a cultural reaction against positivism in the early 20th century.
Etymology
From irrational + -ism.
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
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Using “irrationalism”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-R-R-A-T-I-O-N-A-L-I-S-M - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.