Which to use
“profondément” is an adverb and “prolongement” is a noun - they look or sound alike but fill different roles in a sentence.
- #3,212
- “profondément” frequency rank
- #9,895
- “prolongement” frequency rank
- 13107
- confusion score
Side-by-Side Comparison
| Feature | profondément | prolongement |
|---|---|---|
| Definition | Bien avant. | Extension ou continuation de quelque portion d’étendue. |
Where the eye mixes profondément and prolongement
Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. profondément and prolongement follow the identical consonant-vowel pattern (CCVCVCCVCVCC). Same shape at a glance is often the real trap, independent of shared letters.
Visual trap between profondément and prolongement
These two trip readers on the page rather than in the ear: profondément is \pʁɔ.fɔ̃.de.mɑ̃\ while prolongement is \pʁɔ.lɔ̃ʒ.mɑ̃\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 13107, derived from the frequency rank of both members and their visual similarity.
profondément is recorded at frequency rank #3,212, classified as anadv, pronounced \pʁɔ.fɔ̃.de.mɑ̃\. prolongement is at rank #9,895, tagged as anoun, pronounced \pʁɔ.lɔ̃ʒ.mɑ̃\.
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 13107, this pair ranks #402,401 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of profondément vs prolongement
Shared letters: emnoprt. Private to "profondément": dfé. Private to "prolongement": gl.
"profondément" · 12 letters · shape CCVCVCCVCVCC · "prolongement" · 12 letters · shape CCVCVCCVCVCC
Known mistypes of this pair
- prolongement ← porlongement · pprolongement · prloongement · prollongement · prolnogement · prolognement · prolonegment · prolongeemnt
Frequently Asked Questions
Is swapping "profondément" for "prolongement" ever safe?
Frequency check: "profondément" vs "prolongement" - 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 "profondément" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "prolongement" - compare definitions side by side with the headword page. Word entry
- This pair ranks #402,401 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "profondément" and "prolongement" also get mixed up with nearby pairs, the highest-scored neighbour is "prolongement vs prolongements". 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 #402,401 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.