saivsSBBWhich spelling fits?

Quick tell: sai is a verb, SBB is an abbrev, so they fill different roles in a sentence.

Which to use

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

#47,708
“sai” frequency rank
#15,740
“SBB” frequency rank
63448
confusion score

Side-by-Side Comparison

Feature sai SBB
Definition 2. Person Singular Indikativ Präsens Aktiv des Verbs sapere Schweizerische Bundesbahnen

Where the eye mixes sai and SBB

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

3 ch
sai
3 ch
SBB

Look-alike desk: sai vs SBB

These two trip readers on the page rather than in the ear: sai is [ˈsai̯] while SBB is [ɛsbeːˈbeː]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs abbrev), which is usually the fastest check. Our composite confusion score for this pair is 63448, 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]. SBB is at rank #15,740, tagged as anabbrev, pronounced [ɛsbeːˈbeː].

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 63448, this pair ranks #676,490 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sai vs SBB

Shared letters: s. Private to "sai": ai. Private to "SBB": b.

"sai" · 3 letters · shape CVV  ·  "SBB" · 3 letters · shape CCC

Frequently Asked Questions

Do "sai" and "SBB" mean the same thing in a sentence?
No - they are not even the same part of speech. "sai" is a verb and "SBB" an abbrev, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "sai" or "SBB" show up more?
"SBB" is the more common of the two: it sits at frequency rank #15,740 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.

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 "sai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "SBB" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #676,490 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "sai" and "SBB" also get mixed up with nearby pairs, the highest-scored neighbour is "sai vs seg". Nearby pair

Confusion rank #676,490 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