capervscipherWhich spelling fits?

Which to use

“caper” and “cipher” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#34,418
“caper” frequency rank
#24,701
“cipher” frequency rank
59119
confusion score

Side-by-Side Comparison

Feature caper cipher
Definition A playful leap or jump. A numeric character.

Where the eye mixes caper and cipher

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
caper
6 ch
cipher

Look-alike desk: caper vs cipher

A purely visual mix-up. caper (/ˈkeɪpɚ/) and cipher (/ˈsaɪfə/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 59119, derived from the frequency rank of both members and their visual similarity.

caper is recorded at frequency rank #34,418, classified as anoun, pronounced /ˈkeɪpɚ/. cipher is at rank #24,701, tagged as anoun, pronounced /ˈsaɪfə/.

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 59119, this pair ranks #108,183 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of caper vs cipher

Shared letters: cepr. Private to "caper": a. Private to "cipher": hi.

"caper" · 5 letters · shape CVCVC  ·  "cipher" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • caperacper · caepr · caperr · capper · capre · ccaper · cpaer
  • cipherccipher · cihper · cipehr · cipherr · ciphher · ciphre · cippher · cpiher

Frequently Asked Questions

Is swapping "caper" for "cipher" ever safe?
No. They are said differently (/ˈkeɪpɚ/ versus /ˈsaɪfə/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "caper" or "cipher"?
"cipher" is the more common of the two: it sits at frequency rank #24,701 in our English list, against #34,418 for "caper". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "caper" and "cipher" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "caper" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cipher" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #108,183 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "caper" and "cipher" also get mixed up with nearby pairs, the highest-scored neighbour is "caper vs cower". 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 #108,183 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