rationality
"rationality" is a 11-letter English headword indexed on PlainSpell.
The verdict
“rationality” is a moderately-common English word, ranked #25,544 in English word frequency and used as a noun.
- #25,544
- frequency rank, English
- 11
- letters
- 16
- tracked misspellings
- 4
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The quality or state of being rational; due exercise of reason; reasonableness.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | rationality |
| Language | English |
| Part of speech | Noun |
| Letters | 11 |
| Frequency rank | #25,544 |
| Misspellings tracked | 16 |
| Confusable pairs | 4 |
| Source | Wiktionary (kaikki.org) |
Where “rationality” sits in English frequency
Spelling & Dictionary Insight
The English entry for rationality is 11 letters long, classified as a noun. Corpus data places it at rank #25,544 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 16 likely wrong-spelling variants for rationality, with forms such as "artionality", "raitonality", and "ratinoality". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 4 confusable-pair relationships, "rationally", "rationalize", "rationalism", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: From rational + -ity, from French rationalité, from Late Latin rationalitas (“rationality, reasonableness”), from Latin rationalis (“reasonable”). The correct English form is rationality, spelled R-A-T-I-O-N-A-L-I-T-Y.
Definition
- 1The quality or state of being rational; due exercise of reason; reasonableness.
- 2Objective consideration.
Etymology
From rational + -ity, from French rationalité, from Late Latin rationalitas (“rationality, reasonableness”), from Latin rationalis (“reasonable”).
Synonyms
This word in other languages
Common misspellings
Also misspelled as: artionality,raitonality,ratinoality,ratioanlity,rationailty,rationalitty,rationalityy,rationaliyt,rationallity,rationaltiy,rationlaity,rationnality,ratoinality,rattionality,rrationality,rtaionality
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of rationality - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
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 "rationality"?
What does "rationality" mean?
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Using “rationality”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is R-A-T-I-O-N-A-L-I-T-Y - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “rationally” - see the side-by-side comparison. rationality vs rationally
- 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.