Which to use
“credible” is an adjective and “crucible” is a noun - they look or sound alike but fill different roles in a sentence.
- #10,027
- “credible” frequency rank
- #21,481
- “crucible” frequency rank
- 31508
- confusion score
Side-by-Side Comparison
| Feature | credible | crucible |
|---|---|---|
| Definition | Believable or plausible. | A cup-shaped piece of laboratory equipment used to contain chemical compounds when heating them to very high temperatures. |
Where the eye mixes credible and crucible
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. credible and crucible follow the identical consonant-vowel pattern (CCVCVCCV). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses credible with crucible
These two trip readers on the page rather than in the ear: credible is /ˈkɹɛdəbl̩/ while crucible is /ˈkɹuː.sɪ.bəl/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 31508, derived from the frequency rank of both members and their visual similarity.
credible is recorded at frequency rank #10,027, classified as anadj, pronounced /ˈkɹɛdəbl̩/. crucible is at rank #21,481, tagged as anoun, pronounced /ˈkɹuː.sɪ.bəl/.
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 31508, this pair ranks #345,518 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of credible vs crucible
Shared letters: bceilr. Private to "credible": d. Private to "crucible": u.
"credible" · 8 letters · shape CCVCVCCV · "crucible" · 8 letters · shape CCVCVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "credible" for "crucible" ever safe?
In ordinary English text, does "credible" or "crucible" show up more?
What to do next
Eye-level mix-up between "credible" and "crucible" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "credible" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "crucible" - compare definitions side by side with the headword page. Word entry
- This pair ranks #345,518 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "credible" and "crucible" also get mixed up with nearby pairs, the highest-scored neighbour is "cruciate vs crucible". 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 #345,518 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.