certainty
/ˈsɝtn̩ti/
"certainty" is a 9-letter English headword indexed on PlainSpell.
The verdict
“certainty” is a regularly-used English word, ranked #9,295 in English word frequency and used as a noun.
- #9,295
- frequency rank, English
- 9
- letters
- 14
- tracked misspellings
- 2
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The state of being certain.
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 | certainty |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈsɝtn̩ti/ |
| Letters | 9 |
| Frequency rank | #9,295 |
| Misspellings tracked | 14 |
| Confusable pairs | 2 |
| Source | Wiktionary (kaikki.org) |
Where “certainty” sits in English frequency
Spelling & Dictionary Insight
The English entry for certainty is 9 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈsɝtn̩ti/. Corpus data places it at rank #9,295 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 14 likely wrong-spelling variants for certainty, with forms such as "ccertainty", "ceratinty", and "cerrtainty". 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, "certain", "certainly", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From Middle English certeynte (“surety”), from Anglo-Norman certeinte, from Old French certeinete, from Vulgar Latin *certānitās, from Latin certus. The correct English form is certainty, spelled C-E-R-T-A-I-N-T-Y.
Definition
- 1The state of being certain.
- 2An instance of being certain.
- 3A fact or truth unquestionably established.
Etymology
From Middle English certeynte (“surety”), from Anglo-Norman certeinte, from Old French certeinete, from Vulgar Latin *certānitās, from Latin certus.
This word in other languages
Common misspellings
Also misspelled as: ccertainty,ceratinty,cerrtainty,certainnty,certaintty,certaintyy,certainyt,certaitny,certanity,certianty,certtainty,cetrainty,cretainty,ecrtainty
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of certainty - 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 "certainty"?
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Using “certainty”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-E-R-T-A-I-N-T-Y - every other letter order is a misspelling in standard orthography.
- Say it as /ˈsɝtn̩ti/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “certain” - see the side-by-side comparison. certainty vs certain
- 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.