Which to use
“circa” is a preposition and “circus” is a noun - they look or sound alike but fill different roles in a sentence.
- #13,480
- “circa” frequency rank
- #7,319
- “circus” frequency rank
- 20799
- confusion score
Side-by-Side Comparison
| Feature | circa | circus |
|---|---|---|
| Definition | Approximately, about, around (typically in relation to time) | A traveling company of performers that may include acrobats, clowns, trained animals, and other novelty acts, that gives shows usually in a circular tent. |
Where the eye mixes circa and circus
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: circa vs circus
These two trip readers on the page rather than in the ear: circa is /ˈsɜːkə/ while circus is /ˈsɜːkəs/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (preposition vs noun), which is usually the fastest check. Our composite confusion score for this pair is 20799, derived from the frequency rank of both members and their visual similarity.
circa is recorded at frequency rank #13,480, classified as aprep, pronounced /ˈsɜːkə/. circus is at rank #7,319, tagged as anoun, pronounced /ˈsɜːkəs/.
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 20799, this pair ranks #428,574 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of circa vs circus
Shared letters: cir. Private to "circa": a. Private to "circus": su.
"circa" · 5 letters · shape CVCCV · "circus" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "circa" and "circus" be used interchangeably?
Frequency check: "circa" vs "circus" - which ranks higher?
After this comparison
Eye-level mix-up between "circa" and "circus" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "circa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "circus" - compare definitions side by side with the headword page. Word entry
- This pair ranks #428,574 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "circa" and "circus" also get mixed up with nearby pairs, the highest-scored neighbour is "circa vs curia". 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 #428,574 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.