Which to use
“blunder” and “boulder” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #24,395
- “blunder” frequency rank
- #10,994
- “boulder” frequency rank
- 35389
- confusion score
Side-by-Side Comparison
| Feature | blunder | boulder |
|---|---|---|
| Definition | A clumsy or embarrassing mistake. | A large mass of stone detached from the surrounding land. |
Where the eye mixes blunder and boulder
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. blunder (CCVCCVC) and boulder (CVVCCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses blunder with boulder
A purely visual mix-up. blunder (/ˈblʌn.də(ɹ)/) and boulder (/ˈbəʊl.də(ɹ)/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 35389, derived from the frequency rank of both members and their visual similarity.
blunder is recorded at frequency rank #24,395, classified as anoun, pronounced /ˈblʌn.də(ɹ)/. boulder is at rank #10,994, tagged as anoun, pronounced /ˈbəʊl.də(ɹ)/.
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 35389, this pair ranks #312,421 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of blunder vs boulder
Shared letters: bdelru. Private to "blunder": n. Private to "boulder": o.
"blunder" · 7 letters · shape CCVCCVC · "boulder" · 7 letters · shape CVVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "blunder" and "boulder" be used interchangeably?
Frequency check: "blunder" vs "boulder" - which ranks higher?
What to do next
Eye-level mix-up between "blunder" and "boulder" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "blunder" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "boulder" - compare definitions side by side with the headword page. Word entry
- This pair ranks #312,421 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "blunder" and "boulder" also get mixed up with nearby pairs, the highest-scored neighbour is "blunder vs bluster". 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 #312,421 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.