assure
/əˈʃɔː(ɹ)/
"assure" is a 6-letter English headword indexed on PlainSpell.
The verdict
“assure” is a regularly-used English word, ranked #6,438 in English word frequency and used as a verb.
- #6,438
- frequency rank, English
- 6
- letters
- 6
- tracked misspellings
- 12
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - To make sure and secure; ensure.
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 | assure |
| Language | English |
| Part of speech | Verb |
| IPA | /əˈʃɔː(ɹ)/ |
| Letters | 6 |
| Frequency rank | #6,438 |
| Misspellings tracked | 6 |
| Confusable pairs | 12 |
| Source | Wiktionary (kaikki.org) |
Where “assure” sits in English frequency
Spelling & Dictionary Insight
The English entry for assure is 6 letters long, classified as a verb, and transcribed in the International Phonetic Alphabet as /əˈʃɔː(ɹ)/. Corpus data places it at rank #6,438 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 6 likely wrong-spelling variants for assure, with forms such as "assrue", "assuer", and "assurre". 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 12 confusable-pair relationships, "azure", "astute", "assured", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From Old French asseurer (Modern French assurer), from Latin ad- + securus (“secure”). Cognate with Spanish asegurar. Doublet of assecure. The correct English form is assure, spelled A-S-S-U-R-E.
Definition
- 1To make sure and secure; ensure.
- 2To give (someone) confidence in the trustworthiness of (something).
- 3To guarantee, promise (to do something).
- 4To reassure.
Etymology
From Old French asseurer (Modern French assurer), from Latin ad- + securus (“secure”). Cognate with Spanish asegurar. Doublet of assecure.
This word in other languages
Common misspellings
Also misspelled as: assrue,assuer,assurre,asure,asusre,sasure
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of assure - 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 “assure”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-S-S-U-R-E - every other letter order is a misspelling in standard orthography.
- Say it as /əˈʃɔː(ɹ)/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “azure” - see the side-by-side comparison. assure vs azure
- 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.