déductionsvsdéjectionsTell them apart

Which to use

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

#29,737
“déductions” frequency rank
#38,766
“déjections” frequency rank
68503
confusion score

Side-by-Side Comparison

Feature déductions déjections
Definition Pluriel de déduction. Pluriel de déjection.

Where the eye mixes déductions and déjections

Muted = shared; highlighted = the visual trap. They share 8 letters in sequence. déductions and déjections follow the identical consonant-vowel pattern (CVCVCCVVCC). Same shape at a glance is often the real trap, independent of shared letters.

10 ch
déductions
10 ch
déjections

Why the eye confuses déductions with déjections

A purely visual mix-up. déductions (\de.dyk.sjɔ̃\) and déjections (\de.ʒɛk.sjɔ̃\) 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 68503, derived from the frequency rank of both members and their visual similarity.

déductions is recorded at frequency rank #29,737, classified as anoun, pronounced \de.dyk.sjɔ̃\. déjections is at rank #38,766, tagged as anoun, pronounced \de.ʒɛk.sjɔ̃\.

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 68503, this pair ranks #58,911 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of déductions vs déjections

Shared letters: cdinosté. Private to "déductions": u. Private to "déjections": ej.

"déductions" · 10 letters · shape CVCVCCVVCC  ·  "déjections" · 10 letters · shape CVCVCCVVCC

Frequently Asked Questions

Is swapping "déductions" for "déjections" ever safe?
No. They are said differently (\de.dyk.sjɔ̃\ versus \de.ʒɛk.sjɔ̃\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "déductions" or "déjections"?
"déductions" is the more common of the two: it sits at frequency rank #29,737 in our French list, against #38,766 for "déjections". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "déductions" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "déjections" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #58,911 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "déductions" and "déjections" also get mixed up with nearby pairs, the highest-scored neighbour is "défections vs déjections". Nearby pair

Confusion rank #58,911 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