irrationally
"irrationally" is a 12-letter English headword indexed on PlainSpell.
The verdict
“irrationally” is a moderately-common English word, ranked #49,430 in English word frequency and used as an adverb.
- #49,430
- frequency rank, English
- 12
- letters
- 14
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - In an irrational manner; without reason; in a manner contrary to reason
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 | irrationally |
| Language | English |
| Part of speech | Adverb |
| Letters | 12 |
| Frequency rank | #49,430 |
| Misspellings tracked | 14 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Where “irrationally” sits in English frequency
Spelling & Dictionary Insight
The English entry for irrationally is 12 letters long, classified as an adverb. Corpus data places it at rank #49,430 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "In an irrational manner; without reason; in a manner contrary to reason".
Our generated misspelling index lists 14 likely wrong-spelling variants for irrationally, with forms such as "irartionally", "irationally", and "irraitonally". 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 1 confusable-pair relationship, "irrational", a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: From irrational + -ly. The correct English form is irrationally, spelled I-R-R-A-T-I-O-N-A-L-L-Y.
Definition
- 1In an irrational manner; without reason; in a manner contrary to reason
Etymology
From irrational + -ly.
Antonyms
This word in other languages
Common misspellings
Also misspelled as: irartionally,irationally,irraitonally,irratinoally,irratioanlly,irrationallyy,irrationaly,irrationalyl,irrationlaly,irrationnally,irratoinally,irrattionally,irrtaionally,rirationally
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of irrationally - 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 "irrationally"?
What does "irrationally" mean?
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Using “irrationally”
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-L-Y - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “irrational” - see the side-by-side comparison. irrationally vs irrational
- 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.