Which to use
“realise” and “realize” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #4,625
- “realise” frequency rank
- #1,573
- “realize” frequency rank
- 6198
- confusion score
Side-by-Side Comparison
| Feature | realise | realize |
|---|---|---|
| Definition | Non-Oxford British standard spelling of realize. | To become aware of, understand, or appreciate (a fact or situation, especially something which has been true for some time). |
Letter map: realise vs realize
Shared letters muted; letters that set realise and realize apart highlighted. Shared run: 6. realise and realize follow the identical consonant-vowel pattern (CVVCVCV). Same shape at a glance is often the real trap, independent of shared letters.
Pair insight - realise / realize
realise and realize are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by a single letter - s in “realise” becomes z in “realize”. Our composite confusion score for this pair is 6198, derived from the frequency rank of both members and their visual similarity.
realise is recorded at frequency rank #4,625, classified as averb. realize is at rank #1,573, tagged as averb, pronounced /ˈɹɪə.laɪz/.
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 6198, this pair ranks #512,361 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of realise vs realize
Shared letters: aeilr. Private to "realise": s. Private to "realize": z.
"realise" · 7 letters · shape CVVCVCV · "realize" · 7 letters · shape CVVCVCV
Known mistypes of this pair
Frequently Asked Questions
Do "realise" and "realize" mean the same thing in a sentence?
Frequency check: "realise" vs "realize" - which ranks higher?
What to do next
Pair "realise" vs "realize" is on the table, pick a follow-up below.
- Full dictionary entry for "realise" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "realize" - compare definitions side by side with the headword page. Word entry
- This pair ranks #512,361 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "realise" and "realize" also get mixed up with nearby pairs, the highest-scored neighbour is "realise vs redline". 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 #512,361 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.