authorizevsauthorizedWhat's the difference?

Quick tell: authorize is a verb, authorized is an adjective, so they fill different roles in a sentence.

Which to use

“authorize” is a verb and “authorized” is an adjective - they look or sound alike but fill different roles in a sentence.

#17,545
“authorize” frequency rank
#5,856
“authorized” frequency rank
23401
confusion score

Side-by-Side Comparison

Feature authorize authorized
Definition To grant (someone) the permission or power necessary to do (something); to permit; to sanction or consent to. Explicitly allowed.

Where the eye mixes authorize and authorized

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence.

9 ch
authorize
10 ch
authorized

Why the eye confuses authorize with authorized

These two trip readers on the page rather than in the ear: authorize is /ˈɔθəɹaɪz/ while authorized is /ˈɔθəɹaɪzd/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “authorize” sits inside “authorized”, and the parts of speech differ too (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 23401, derived from the frequency rank of both members and their visual similarity.

authorize is recorded at frequency rank #17,545, classified as averb, pronounced /ˈɔθəɹaɪz/. authorized is at rank #5,856, tagged as anadj, pronounced /ˈɔθəɹaɪzd/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 23401, this pair ranks #409,554 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of authorize vs authorized

Shared letters: aehiortuz. Private to "authorize": -. Private to "authorized": d.

"authorize" · 9 letters · shape VVCCVCVCV  ·  "authorized" · 10 letters · shape VVCCVCVCVC

Known mistypes of this pair

  • authorizeatuhorize · auhtorize · authhorize · authoirze · authoriez · authorizze · authorrize · authorzie
  • authorizedatuhorized · auhtorized · authhorized · authoirzed · authoriezd · authorizde · authorizedd · authorizzed

Frequently Asked Questions

Do "authorize" and "authorized" mean the same thing in a sentence?
No - they are not even the same part of speech. "authorize" is a verb and "authorized" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "authorize" or "authorized"?
"authorized" is the more common of the two: it sits at frequency rank #5,856 in our English list, against #17,545 for "authorize". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "authorize" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "authorized" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #409,554 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "authorize" and "authorized" also get mixed up with nearby pairs, the highest-scored neighbour is "authorise vs authorize". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #409,554 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list