certify
/ˈsɜː.tɪ.faɪ/
"certify" is a 7-letter English headword indexed on PlainSpell.
The verdict
“certify” is a moderately-common English word, ranked #26,034 in English word frequency and used as a verb.
- #26,034
- frequency rank, English
- 7
- letters
- 11
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - To attest to (a fact) as the truth.
| Property | Value |
|---|---|
| Headword | certify |
| Language | English |
| Part of speech | Verb |
| IPA | /ˈsɜː.tɪ.faɪ/ |
| Letters | 7 |
| Frequency rank | #26,034 |
| Misspellings tracked | 11 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “certify” sits in English frequency
Spelling & Dictionary Insight
The English entry for certify is 7 letters long, classified as a verb, and transcribed in the International Phonetic Alphabet as /ˈsɜː.tɪ.faɪ/. Corpus data places it at rank #26,034 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 5 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 11 likely wrong-spelling variants for certify, with forms such as "ccertify", "ceritfy", and "cerrtify". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From Old French certefier (“confirm, assure, make certain”). Compare French certifier. The correct English form is certify, spelled C-E-R-T-I-F-Y.
Definition
- 1To attest to (a fact) as the truth.
- 2To authenticate or verify in writing.
- 3To attest that a product, service, organization, or person has met an official standard.
- 4To inform; to tell (a person) that something is true.
- 5To assure (oneself) of something; to ascertain.
Etymology
From Old French certefier (“confirm, assure, make certain”). Compare French certifier.
This word in other languages
Common misspellings
Also misspelled as: ccertify,ceritfy,cerrtify,certfiy,certiffy,certifyy,certiyf,certtify,cetrify,cretify,ecrtify
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of certify - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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 “certify”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-E-R-T-I-F-Y - every other letter order is a misspelling in standard orthography.
- Say it as /ˈsɜː.tɪ.faɪ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.