bacvsbakTell them apart

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

Which to use

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

#2,217
“bac” frequency rank
#46,599
“bak” frequency rank
48816
confusion score

Side-by-Side Comparison

Feature bac bak
Definition Auge destinée à divers usages. Forme mutée de pak par adoucissement (p → b).

Same sound, different letters: bac vs bak

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 2 letters.

3 ch
bac
3 ch
bak

Ear matches; page differs - bac and bak

Say them out loud and nothing separates them: bac and bak carry the same recorded pronunciation, \bak\. Grammar is what tells them apart: one is anoun, the other averb, so most sentences will only accept one of them. They differ by a single letter - c in “bac” becomes k in “bak”. Our composite confusion score for this pair is 48816, derived from the frequency rank of both members and their visual similarity.

bac is recorded at frequency rank #2,217, classified as anoun, pronounced \bak\. bak is at rank #46,599, tagged as averb, pronounced \ˈbakː\.

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 48816, this pair ranks #175,813 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of bac vs bak

Shared letters: ab. Private to "bac": c. Private to "bak": k.

"bac" · 3 letters · shape CVC  ·  "bak" · 3 letters · shape CVC

Frequently Asked Questions

Do "bac" and "bak" mean the same thing in a sentence?
No - they are not even the same part of speech. "bac" is a noun and "bak" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "bac" or "bak" show up more?
"bac" is the more common of the two: it sits at frequency rank #2,217 in our French list, against #46,599 for "bak". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've separated the homophone pair "bac" / "bak". Follow the links when you need the full entry or a neighbour that trips the same ear.

  • Full dictionary entry for "bac" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "bak" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #175,813 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "bac" and "bak" also get mixed up with nearby pairs, the highest-scored neighbour is "bak vs ber". Nearby pair

Confusion rank #175,813 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