undefeated
"undefeated" is a 10-letter English headword indexed on PlainSpell.
The verdict
“undefeated” is a moderately-common English word, ranked #12,707 in English word frequency and used as an adjective.
- #12,707
- frequency rank, English
- 10
- letters
- 14
- tracked misspellings
- 2
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Never defeated; always victorious.
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 | undefeated |
| Language | English |
| Part of speech | Adjective |
| Letters | 10 |
| Frequency rank | #12,707 |
| Misspellings tracked | 14 |
| Confusable pairs | 2 |
| Source | Wiktionary (kaikki.org) |
Where “undefeated” sits in English frequency
Spelling & Dictionary Insight
The English entry for undefeated is 10 letters long, classified as an adjective. Corpus data places it at rank #12,707 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "Never defeated; always victorious.".
Our generated misspelling index lists 14 likely wrong-spelling variants for undefeated, with forms such as "nudefeated", "udnefeated", and "unddefeated". 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 2 confusable-pair relationships, "underrated", "undetected", since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From un- + defeated. The correct English form is undefeated, spelled U-N-D-E-F-E-A-T-E-D.
Definition
- 1Never defeated; always victorious.
Etymology
From un- + defeated.
This word in other languages
Common misspellings
Also misspelled as: nudefeated,udnefeated,unddefeated,undeefated,undefaeted,undefeaetd,undefeatde,undefeatedd,undefeatted,undefetaed,undeffeated,undfeeated,unedfeated,unndefeated
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of undefeated - 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
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Using “undefeated”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is U-N-D-E-F-E-A-T-E-D - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “underrated” - see the side-by-side comparison. undefeated vs underrated
- 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.