French disease

noun

"french-disease" is a 13-letter English headword indexed on PlainSpell.

The verdict

“French disease” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.

Unranked
below top-frequency English
14
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Syphilis.

Key facts for French disease
PropertyValue
HeadwordFrench disease
LanguageEnglish
Part of speechNoun
Letters14
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “French disease” sits in English frequency

French disease falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for French disease is 14 letters long, classified as a noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "Syphilis.".

Our edit-distance generator produced no likely misspellings for French disease, and the word's spelling is regular enough that our generator found nothing worth flagging. No close-neighbour confusable shows up for this headword in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: So called because it was spread by returning French troops in mediaeval times. The correct English form is French disease, spelled F-R-E-N-C-H- -D-I-S-E-A-S-E.

Definition

  1. 1
    Syphilis.

Etymology

So called because it was spread by returning French troops in mediaeval times.

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "French disease"?
"French disease" is spelled F-R-E-N-C-H- -D-I-S-E-A-S-E.
What does "French disease" mean?
As a noun, "French disease" means: Syphilis.
What is the origin of the word "French disease"?
So called because it was spread by returning French troops in mediaeval times. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “French disease”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is F-R-E-N-C-H- -D-I-S-E-A-S-E - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list