Which to use
“plongent” and “prolongent” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #28,294
- “plongent” frequency rank
- #33,842
- “prolongent” frequency rank
- 62136
- confusion score
Side-by-Side Comparison
| Feature | plongent | prolongent |
|---|---|---|
| Definition | Troisième personne du pluriel du présent de l’indicatif de plonger. | Troisième personne du pluriel du présent de l’indicatif de prolonger. |
Where the eye mixes plongent and prolongent
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.
Look-alike desk: plongent vs prolongent
A purely visual mix-up. plongent (\plɔ̃ʒ\) and prolongent (\pʁɔ.lɔ̃ʒ\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 letter(s) in length. Our composite confusion score for this pair is 62136, derived from the frequency rank of both members and their visual similarity.
plongent is recorded at frequency rank #28,294, classified as averb, pronounced \plɔ̃ʒ\. prolongent is at rank #33,842, tagged as averb, pronounced \pʁɔ.lɔ̃ʒ\.
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 62136, this pair ranks #88,662 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of plongent vs prolongent
Shared letters: eglnopt. Private to "plongent": -. Private to "prolongent": r.
"plongent" · 8 letters · shape CCVCCVCC · "prolongent" · 10 letters · shape CCVCVCCVCC
Known mistypes of this pair
- plongent ← lpongent · pllongent · plnogent · plognent · plonegnt · plongennt · plongentt · plongetn
- prolongent ← porlongent · pprolongent · prloongent · prollongent · prolnogent · prolognent · prolonegnt · prolongennt
Frequently Asked Questions
Is swapping "plongent" for "prolongent" ever safe?
Frequency check: "plongent" vs "prolongent" - which ranks higher?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "plongent" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "prolongent" - compare definitions side by side with the headword page. Word entry
- This pair ranks #88,662 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "plongent" and "prolongent" also get mixed up with nearby pairs, the highest-scored neighbour is "prolongent vs prolongera". 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 #88,662 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.