siavsSiamWhich spelling fits?

Quick tell: sia is a pronoun, Siam is a name, so they fill different roles in a sentence.

Which to use

“sia” is a pronoun and “Siam” is a name - they look or sound alike but fill different roles in a sentence.

#32,768
“sia” frequency rank
#46,278
“Siam” frequency rank
79046
confusion score

Side-by-Side Comparison

Feature sia Siam
Definition sein(e) [eigene(r, -s)], ihr(e) [eigene(r, -s)] Königreich in Südostasien, größtenteils auf dem Gebiet des heutigen Thailands

Letter map: sia vs Siam

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

3 ch
sia
4 ch
Siam

Grammar separator: sia vs Siam

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sia is apronoun and Siamaname. On the page they differ by 1 extra letter(s) - “sia” sits inside “Siam”. Our composite confusion score for this pair is 79046, derived from the frequency rank of both members and their visual similarity.

sia is recorded at frequency rank #32,768, classified as apron. Siam is at rank #46,278, tagged as aname, pronounced [ˈziːam].

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 79046, this pair ranks #224,934 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of sia vs Siam

Shared letters: ais. Private to "sia": -. Private to "Siam": m.

"sia" · 3 letters · shape CVV  ·  "Siam" · 4 letters · shape CVVC

Known mistypes of this pair

  • Siam ← isam · siamm · sima · ssiam

Frequently Asked Questions

Can "sia" and "Siam" be used interchangeably?
No - they are not even the same part of speech. "sia" is a pronoun and "Siam" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sia" or "Siam"?
"sia" is the more common of the two: it sits at frequency rank #32,768 in our German list, against #46,278 for "Siam". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "sia" vs "Siam" is on the table, pick a follow-up below.

  • Full dictionary entry for "sia" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Siam" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #224,934 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "sia" and "Siam" also get mixed up with nearby pairs, the highest-scored neighbour is "Siam vs Sire". 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 #224,934 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