cairvschiWhich spelling fits?

Quick tell: cair is a verb, chi is a noun, so they fill different roles in a sentence.

Which to use

“cair” is a verb and “chi” is a noun - they look or sound alike but fill different roles in a sentence.

#47,515
“cair” frequency rank
#7,660
“chi” frequency rank
55175
confusion score

Side-by-Side Comparison

Feature cair chi
Definition To go. The twenty-second letter of the Classical and Modern Greek alphabets.

Letter map: cair vs chi

Shared letters muted; letters that set cair and chi apart highlighted. Shared run: 2.

4 ch
cair
3 ch
chi

Part-of-speech tell for cair / chi

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cair is averb and chianoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 55175, derived from the frequency rank of both members and their visual similarity.

cair is recorded at frequency rank #47,515, classified as averb. chi is at rank #7,660, tagged as anoun, pronounced /kaɪ/.

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 55175, this pair ranks #135,610 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cair vs chi

Shared letters: ci. Private to "cair": ar. Private to "chi": h.

"cair" · 4 letters · shape CVVC  ·  "chi" · 3 letters · shape CCV

Known mistypes of this pair

  • cairacir · cairr · cari · ccair · ciar

Frequently Asked Questions

Can "cair" and "chi" be used interchangeably?
No - they are not even the same part of speech. "cair" is a verb and "chi" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "cair" vs "chi" - which ranks higher?
"chi" is the more common of the two: it sits at frequency rank #7,660 in our English list, against #47,515 for "cair". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "cair" and "chi". Here's where to go from here.

  • Full dictionary entry for "cair" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "chi" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #135,610 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "cair" and "chi" also get mixed up with nearby pairs, the highest-scored neighbour is "cair vs CCI". 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 #135,610 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