cosyvscyWhat's the difference?

Quick tell: cosy is a noun, cy is an adverb, so they fill different roles in a sentence.

Which to use

“cosy” is a noun and “cy” is an adverb - they look or sound alike but fill different roles in a sentence.

#41,722
“cosy” frequency rank
#27,395
“cy” frequency rank
69117
confusion score

Side-by-Side Comparison

Feature cosy cy
Definition Enveloppe fourrée, généralement en tissu ouatiné, dont on couvre une théière, un plat ou un œuf, pour en conserver la chaleur. Ci.

Letter map: cosy vs cy

Shared letters muted; letters that set cosy and cy apart highlighted. Shared run: 2.

4 ch
cosy
2 ch
cy

Grammar separator: cosy vs cy

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cosy is anoun and cyanadverb. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 69117, derived from the frequency rank of both members and their visual similarity.

cosy is recorded at frequency rank #41,722, classified as anoun, pronounced \kɔ.zi\. cy is at rank #27,395, tagged as anadv.

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 69117, this pair ranks #56,399 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of cosy vs cy

Shared letters: cy. Private to "cosy": os. Private to "cy": -.

"cosy" · 4 letters · shape CVCV  ·  "cy" · 2 letters · shape CV

Known mistypes of this pair

  • cosyccosy · cossy · cosyy · coys · csoy · ocsy

Frequently Asked Questions

Is swapping "cosy" for "cy" ever safe?
No - they are not even the same part of speech. "cosy" is a noun and "cy" an adverb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "cosy" vs "cy" - which ranks higher?
"cy" is the more common of the two: it sits at frequency rank #27,395 in our French list, against #41,722 for "cosy". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "cosy" and "cy".

  • Full dictionary entry for "cosy" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #56,399 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "cosy" and "cy" also get mixed up with nearby pairs, the highest-scored neighbour is "coon vs cosy". 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 #56,399 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list