sivssukTell them apart

Quick tell: si is a conjunction, suk is a noun, so they fill different roles in a sentence.

Which to use

“si” is a conjunction and “suk” is a noun - they look or sound alike but fill different roles in a sentence.

#46
“si” frequency rank
#47,626
“suk” frequency rank
47672
confusion score

Side-by-Side Comparison

Feature si suk
Definition Dans le cas où, à condition que, supposé que. Note d’usage : Conjonction qui introduit une condition (suivie d’une conséquence) ou une supposition qui peut être supprimée en utilisant un conditionnel. Nœud dans le bois.

Where the eye mixes si and suk

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

2 ch
si
3 ch
suk

Look-alike desk: si vs suk

These two trip readers on the page rather than in the ear: si is \si\ while suk is \sʊk\. 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 (conjunction vs noun), which is usually the fastest check. Our composite confusion score for this pair is 47672, derived from the frequency rank of both members and their visual similarity.

si is recorded at frequency rank #46, classified as aconj, pronounced \si\. suk is at rank #47,626, tagged as anoun, pronounced \sʊk\.

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 47672, this pair ranks #185,082 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of si vs suk

Shared letters: s. Private to "si": i. Private to "suk": ku.

"si" · 2 letters · shape CV  ·  "suk" · 3 letters · shape CVC

Frequently Asked Questions

Do "si" and "suk" mean the same thing in a sentence?
No - they are not even the same part of speech. "si" is a conjunction and "suk" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "si" or "suk" show up more?
"si" is the more common of the two: it sits at frequency rank #46 in our French list, against #47,626 for "suk". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "si" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "suk" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #185,082 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "si" and "suk" also get mixed up with nearby pairs, the highest-scored neighbour is "suk vs suu". Nearby pair

Confusion rank #185,082 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