seinvssethTell them apart

Which to use

“sein” and “seth” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#746
“sein” frequency rank
#13,909
“seth” frequency rank
14655
confusion score

Side-by-Side Comparison

Feature sein seth
Definition Partie antérieure du thorax humain, où se trouvent les mamelles. Flèche, sagette (arme).

Where the eye mixes sein and seth

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. sein (CVVC) and seth (CVCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

4 ch
sein
4 ch
seth

Visual trap between sein and seth

A purely visual mix-up. sein (\sɛ̃\) and seth (\ˈsɛːs\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 14655, derived from the frequency rank of both members and their visual similarity.

sein is recorded at frequency rank #746, classified as anoun, pronounced \sɛ̃\. seth is at rank #13,909, tagged as anoun, pronounced \ˈsɛːs\.

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 14655, this pair ranks #395,760 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sein vs seth

Shared letters: es. Private to "sein": in. Private to "seth": ht.

"sein" · 4 letters · shape CVVC  ·  "seth" · 4 letters · shape CVCC

Known mistypes of this pair

  • sein ← esin · seinn · seni · ssein
  • seth ← esth · seht · sethh · setth · sseth · steh

Frequently Asked Questions

Do "sein" and "seth" mean the same thing in a sentence?
No. They are said differently (\sɛ̃\ versus \ˈsɛːs\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "sein" or "seth"?
"sein" is the more common of the two: it sits at frequency rank #746 in our French list, against #13,909 for "seth". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "sein" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "seth" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #395,760 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "sein" and "seth" also get mixed up with nearby pairs, the highest-scored neighbour is "Sepp vs seth". 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 #395,760 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