coivsconWhich spelling fits?

Quick tell: coi is a adjective, con is a noun, so they fill different roles in a sentence.

Which to use

“coi” is an adjective and “con” is a noun - they look or sound alike but fill different roles in a sentence.

#40,676
“coi” frequency rank
#1,056
“con” frequency rank
41732
confusion score

Side-by-Side Comparison

Feature coi con
Definition Qui est calme, tranquille. Sexe de la femme.

Where the eye mixes coi and con

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
coi
3 ch
con

Visual trap between coi and con

These two trip readers on the page rather than in the ear: coi is \kwa\ while con is \kɔ̃\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - i in “coi” becomes n in “con”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 41732, derived from the frequency rank of both members and their visual similarity.

coi is recorded at frequency rank #40,676, classified as anadj, pronounced \kwa\. con is at rank #1,056, tagged as anoun, pronounced \kɔ̃\.

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 41732, this pair ranks #230,907 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of coi vs con

Shared letters: co. Private to "coi": i. Private to "con": n.

"coi" · 3 letters · shape CVV  ·  "con" · 3 letters · shape CVC

Frequently Asked Questions

Can "coi" and "con" be used interchangeably?
No - they are not even the same part of speech. "coi" is an adjective and "con" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "coi" or "con"?
"con" is the more common of the two: it sits at frequency rank #1,056 in our French list, against #40,676 for "coi". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "coi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "con" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #230,907 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "coi" and "con" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs coi". Nearby pair

Confusion rank #230,907 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