PlainSpell data

The corpus in numbers

According to the PlainSpell database, the corpus holds 6,918,744 words and 3,375,996 confusable pairs across five languages, sourced from Wiktionary via kaikki.org, a structured export of over 1,000,000 English dictionary entries (CC BY-SA). Every figure below is counted directly from the live database, see the methodology for how each is derived, and is free to cite or available to download as a CSV dataset.

At a glance

PlainSpell indexes 6,918,744 words across 5 languages, with 3,375,996 confusable pairs, 27,821 homophones and 1,974,632 generated misspelling variants.

6.92M
words indexed
3.38M
confusable pairs
27,821
homophones
1.97M
misspelling variants

Source: Wiktionary (kaikki.org, CC BY-SA) + open word-frequency list. Data vintage May 2026.

Key findings

  • PlainSpell catalogues 6,918,744 words across 5 languages (French, German, Spanish, English, Portuguese), all derived from Wiktionary.
  • French is the largest of the 5 dictionaries at 4,485,239 words, more than the other four languages combined.
  • The corpus maps 3,375,996 confusable word pairs: visually or phonetically similar words a spell-checker cannot disambiguate on its own.
  • German has the most confusable pairs (2,006,359), a by-product of its highly productive compound-word formation.
  • French leads in catalogued homophones (21,890 words that share a pronunciation), reflecting its many silent letters and merged vowel sounds.
  • The corpus also generates 1,974,632 edit-distance misspelling variants for spell-check and typo research.

Each figure is computed live from the PlainSpell database (data vintage May 2026) and free to cite (CC BY-SA).

Words indexed by language

Language Words Confusables Homophones
🇫🇷 French
4,485,239
440,172 21,890
🇩🇪 German
1,077,739
2,006,359 2,859
🇪🇸 Spanish
770,428
323,831 812
🇺🇸 English
545,755
530,003 2,182
🇧🇷 Portuguese
39,583
75,631 78
All languages 6,918,744 3,375,996 27,821

Counts are read live from the PlainSpell database (data vintage May 2026). Misspelling variants are generated by edit-distance from each headword, not observed corpus frequencies.

Download the data (CSV) - per-language counts, CC BY-SA, free to reuse.

Go deeper

From the totals to the individual records.

  • Explore any language in full, definitions, IPA, etymology and misspellings. English A–Z
  • See the cross-language rankings: hardest to spell, most confusable, largest homophone groups. Rankings
  • Read how the corpus is built and refreshed. Methodology