undeniably
"undeniably" is a 10-letter English headword indexed on PlainSpell.
The verdict
“undeniably” is a moderately-common English word, ranked #23,714 in English word frequency and used as an adverb.
- #23,714
- frequency rank, English
- 10
- letters
- 15
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - In an undeniable manner, or to an undeniable extent.
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 | undeniably |
| Language | English |
| Part of speech | Adverb |
| Letters | 10 |
| Frequency rank | #23,714 |
| Misspellings tracked | 15 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Where “undeniably” sits in English frequency
Spelling & Dictionary Insight
The English entry for undeniably is 10 letters long, classified as an adverb. Corpus data places it at rank #23,714 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 15 likely wrong-spelling variants for undeniably, with forms such as "nudeniably", "udneniably", and "unddeniably". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 1 confusable-pair relationship, "undeniable", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From undeniable + -ly, equivalent to un- + deny + -ably. The correct English form is undeniably, spelled U-N-D-E-N-I-A-B-L-Y.
Definition
- 1In an undeniable manner, or to an undeniable extent.
- 2Used as a modal adverb to assert that the indicated statement is undeniable.
Etymology
From undeniable + -ly, equivalent to un- + deny + -ably.
This word in other languages
Common misspellings
Also misspelled as: nudeniably,udneniably,unddeniably,undeinably,undenaibly,undeniabbly,undeniablly,undeniablyy,undeniabyl,undenialby,undenibaly,undenniably,undneiably,unedniably,unndeniably
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of undeniably - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
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 "undeniably"?
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Using “undeniably”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is U-N-D-E-N-I-A-B-L-Y - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “undeniable” - see the side-by-side comparison. undeniably vs undeniable
- 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.