antirational

adj

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

The verdict

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

Unranked
below top-frequency English
12
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Lacking or (especially) opposed to reason and rational thought.

Corpus desk

Index EN-antirational · antirational · English

antirational · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "A" 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 antirational
PropertyValue
Headwordantirational
LanguageEnglish
Part of speechAdjective
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “antirational” in English

antirationalfalls 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

antirational is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Lacking or (especially) opposed to reason and rational thought.".

No generated misspelling entries exist for antirational in our index, typically a sign the spelling maps closely to how the word sounds. We don't track a confusable pairing for this entry, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From anti- + rational. The correct English form is antirational, spelled A-N-T-I-R-A-T-I-O-N-A-L.

Definition

  1. 1
    Lacking or (especially) opposed to reason and rational thought.

Recorded use

Wiktionary examples

These source excerpts show how antirational appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. This view is further illustrated by bringing forward the Catholic doctrines, showing the “antirational notion of them,” and thus exhibiting “the mysterious bearings and incomplete character of the Revelation.”
  2. Rand refused to detach even a seemingly radical rebellion from the social totality in which it emerged. The New Left was as much an outgrowth of the antirational as the culture it had rejected.

Etymology

From anti- + rational.

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 "antirational"?
"antirational" is spelled A-N-T-I-R-A-T-I-O-N-A-L.
What does "antirational" mean?
As an adjective, "antirational" means: Lacking or (especially) opposed to reason and rational thought.
What is the origin of the word "antirational"?
From anti- + rational. 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