soldervssouderWhat's the difference?

Which to use

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

#37,562
“solder” frequency rank
#28,752
“souder” frequency rank
66314
confusion score

Side-by-Side Comparison

Feature solder souder
Definition Donner une solde à des troupes, à des mercenaires. Unir directement par le martelage ou la fusion autogène des parties en contact, de manière à n’en faire qu’une même pièce, en parlant des pièces de métal.

Where the eye mixes solder and souder

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. solder (CVCCVC) and souder (CVVCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

6 ch
solder
6 ch
souder

Why the eye confuses solder with souder

A purely visual mix-up. solder (\sɔl.de\) and souder (\su.de\) 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 a single letter - l in “solder” becomes u in “souder”. Our composite confusion score for this pair is 66314, derived from the frequency rank of both members and their visual similarity.

solder is recorded at frequency rank #37,562, classified as averb, pronounced \sɔl.de\. souder is at rank #28,752, tagged as averb, pronounced \su.de\.

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 66314, this pair ranks #68,367 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of solder vs souder

Shared letters: deors. Private to "solder": l. Private to "souder": u.

"solder" · 6 letters · shape CVCCVC  ·  "souder" · 6 letters · shape CVVCVC

Known mistypes of this pair

  • solder ← oslder · sloder · sodler · soldder · solderr · soldre · soledr · sollder
  • souder ← osuder · soduer · soudder · souderr · souedr · ssouder · suoder

Frequently Asked Questions

Can "solder" and "souder" be used interchangeably?
No. They are said differently (\sɔl.de\ versus \su.de\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "solder" or "souder"?
"souder" is the more common of the two: it sits at frequency rank #28,752 in our French list, against #37,562 for "solder". 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 "solder" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "souder" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #68,367 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "solder" and "souder" also get mixed up with nearby pairs, the highest-scored neighbour is "solder vs soler". 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 #68,367 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