srcvssuWhich spelling fits?

Quick tell: src is a noun, su is a verb, so they fill different roles in a sentence.

Which to use

“src” is a noun and “su” is a verb - they look or sound alike but fill different roles in a sentence.

#25,816
“src” frequency rank
#1,609
“su” frequency rank
27425
confusion score

Side-by-Side Comparison

Feature src su
Definition Source. Participe passé masculin singulier du verbe savoir.

Where the eye mixes src and su

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
src
2 ch
su

Why the eye confuses src with su

These two trip readers on the page rather than in the ear: src is \sɔːs\ while su is \sy\. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 27425, derived from the frequency rank of both members and their visual similarity.

src is recorded at frequency rank #25,816, classified as anoun, pronounced \sɔːs\. su is at rank #1,609, tagged as averb, pronounced \sy\.

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 27425, this pair ranks #329,050 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of src vs su

Shared letters: s. Private to "src": cr. Private to "su": u.

"src" · 3 letters · shape CCC  ·  "su" · 2 letters · shape CV

Frequently Asked Questions

Do "src" and "su" mean the same thing in a sentence?
No - they are not even the same part of speech. "src" is a noun and "su" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "src" or "su"?
"su" is the more common of the two: it sits at frequency rank #1,609 in our French list, against #25,816 for "src". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "src" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "su" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #329,050 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "src" and "su" also get mixed up with nearby pairs, the highest-scored neighbour is "src vs suu". Nearby pair

Confusion rank #329,050 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