calipervscaperWhich spelling fits?

Which to use

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

#44,104
“caliper” frequency rank
#34,418
“caper” frequency rank
78522
confusion score

Side-by-Side Comparison

Feature caliper caper
Definition Alternative form of calipers, a device used to measure dimensions. A playful leap or jump.

Where the eye mixes caliper and caper

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. caliper runs 7 letters (CVCVCVC) against caper's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

7 ch
caliper
5 ch
caper

Visual trap between caliper and caper

A purely visual mix-up. caliper (/ˈkælɪpɚ/) and caper (/ˈkeɪpɚ/) 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 2 letter(s) in length. Our composite confusion score for this pair is 78522, derived from the frequency rank of both members and their visual similarity.

caliper is recorded at frequency rank #44,104, classified as anoun, pronounced /ˈkælɪpɚ/. caper is at rank #34,418, tagged as anoun, pronounced /ˈkeɪpɚ/.

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 78522, this pair ranks #24,414 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of caliper vs caper

Shared letters: acepr. Private to "caliper": il. Private to "caper": -.

"caliper" · 7 letters · shape CVCVCVC  ·  "caper" · 5 letters · shape CVCVC

Known mistypes of this pair

  • caliper ← acliper · cailper · caliepr · caliperr · calipper · calipre · calliper · calpier
  • caper ← acper · caepr · caperr · capper · capre · ccaper · cpaer

Frequently Asked Questions

Is swapping "caliper" for "caper" ever safe?
No. They are said differently (/ˈkælɪpɚ/ versus /ˈkeɪpɚ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "caliper" vs "caper" - which ranks higher?
"caper" is the more common of the two: it sits at frequency rank #34,418 in our English list, against #44,104 for "caliper". 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 "caliper" and "caper" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "caliper" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "caper" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #24,414 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "caliper" and "caper" also get mixed up with nearby pairs, the highest-scored neighbour is "caliper vs calipers". 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 #24,414 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