sondevssonoreTell them apart

Quick tell: sonde is a noun, sonore is an adjective, so they fill different roles in a sentence.

Which to use

“sonde” is a noun and “sonore” is an adjective - they look or sound alike but fill different roles in a sentence.

#7,902
“sonde” frequency rank
#6,892
“sonore” frequency rank
14794
confusion score

Side-by-Side Comparison

Feature sonde sonore
Definition Instrument qui sert à sonder. — Il se dit particulièrement d’un plomb attaché à une corde et dont on use pour connaître la profondeur de la mer, d’une rivière, la nature du fond, etc. Qui rend un son.

Where the eye mixes sonde and sonore

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. sonde runs 5 letters (CVCCV) against sonore's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
sonde
6 ch
sonore

Visual trap between sonde and sonore

These two trip readers on the page rather than in the ear: sonde is \sɔ̃d\ while sonore is \sɔ.nɔʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 14794, derived from the frequency rank of both members and their visual similarity.

sonde is recorded at frequency rank #7,902, classified as anoun, pronounced \sɔ̃d\. sonore is at rank #6,892, tagged as anadj, pronounced \sɔ.nɔʁ\.

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 14794, this pair ranks #395,202 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sonde vs sonore

Shared letters: enos. Private to "sonde": d. Private to "sonore": r.

"sonde" · 5 letters · shape CVCCV  ·  "sonore" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • sonde ← osnde · snode · sodne · sondde · soned · sonnde · ssonde
  • sonore ← osnore · snoore · sonnore · sonoer · sonorre · sonroe · soonre · ssonore

Frequently Asked Questions

Can "sonde" and "sonore" be used interchangeably?
No - they are not even the same part of speech. "sonde" is a noun and "sonore" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "sonde" or "sonore" show up more?
"sonore" is the more common of the two: it sits at frequency rank #6,892 in our French list, against #7,902 for "sonde". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "sonde" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sonore" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #395,202 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "sonde" and "sonore" also get mixed up with nearby pairs, the highest-scored neighbour is "sind vs sonde". 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 #395,202 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