saivssuisTell them apart

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

Which to use

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

#47,708
“sai” frequency rank
#42,166
“suis” frequency rank
89874
confusion score

Side-by-Side Comparison

Feature sai suis
Definition 2. Person Singular Indikativ Präsens Aktiv des Verbs sapere Inessiv Plural des Substantivs suu „Mund“

Letter map: sai vs suis

Shared letters muted; letters that set sai and suis apart highlighted. Shared run: 2. sai runs 3 letters (CVV) against suis's 4 (CVVC) - the length gap alone is often enough to separate them once you know to check it.

3 ch
sai
4 ch
suis

Part-of-speech tell for sai / suis

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sai is averb and suisanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 89874, derived from the frequency rank of both members and their visual similarity.

sai is recorded at frequency rank #47,708, classified as averb, pronounced [ˈsai̯]. suis is at rank #42,166, tagged as anoun, pronounced […].

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 89874, this pair ranks #52,735 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of sai vs suis

Shared letters: is. Private to "sai": a. Private to "suis": u.

"sai" · 3 letters · shape CVV  ·  "suis" · 4 letters · shape CVVC

Known mistypes of this pair

  • suis ← sius · ssuis · suiss · susi · usis

Frequently Asked Questions

Can "sai" and "suis" be used interchangeably?
No - they are not even the same part of speech. "sai" is a verb and "suis" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "sai" or "suis" show up more?
"suis" is the more common of the two: it sits at frequency rank #42,166 in our German list, against #47,708 for "sai". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "sai" vs "suis" is on the table, pick a follow-up below.

  • Full dictionary entry for "sai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "suis" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #52,735 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "sai" and "suis" also get mixed up with nearby pairs, the highest-scored neighbour is "sai vs seg". 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 #52,735 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list