authorise
"authorise" is a 9-letter English headword indexed on PlainSpell.
The verdict
“authorise” is a moderately-common English word, ranked #37,329 in English word frequency and used as a verb.
- #37,329
- frequency rank, English
- 9
- letters
- 12
- tracked misspellings
- 4
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Non-Oxford British English standard spelling of authorize.
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 | authorise |
| Language | English |
| Part of speech | Verb |
| Letters | 9 |
| Frequency rank | #37,329 |
| Misspellings tracked | 12 |
| Confusable pairs | 4 |
| Source | Wiktionary (kaikki.org) |
Where “authorise” sits in English frequency
Spelling & Dictionary Insight
The English entry for authorise is 9 letters long, classified as a verb. Corpus data places it at rank #37,329 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "Non-Oxford British English standard spelling of authorize.".
Our generated misspelling index lists 12 likely wrong-spelling variants for authorise, with forms such as "atuhorise", "auhtorise", and "authhorise". 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 4 confusable-pair relationships, "authors", "authority", "authorize", and more, where similar look or sound leads writers to substitute one word for another in context.
Wiktionary doesn't record an etymology for this headword, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is authorise, spelled A-U-T-H-O-R-I-S-E.
Definition
- 1Non-Oxford British English standard spelling of authorize.
Common misspellings
Also misspelled as: atuhorise,auhtorise,authhorise,authoirse,authories,authorisse,authorrise,authorsie,authroise,autohrise,autthorise,uathorise
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of authorise - 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 “authorise”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-U-T-H-O-R-I-S-E - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “authors” - see the side-by-side comparison. authorise vs authors
- 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.