sous réserve de

conj

By · According to Wiktionary data (CC BY-SA) ·

The verdict

“sous réserve de” is uncommon French (outside the top frequency list), classed as a conjunction. The kind of spelling people second-guess.

Unranked
below top-frequency French
15
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - À condition de, si (très restrictif).

Corpus desk

Index FR-sous-reserve-de · sous réserve de · French

sous réserve de · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 15 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "S" thin
  • PHOTO-UNK Peer pending

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for sous réserve de
PropertyValue
Headwordsous réserve de
LanguageFrench
Part of speechConjunction
Letters15
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “sous réserve de” sits in French frequency

sous réserve de falls outside the top-100,000 ranked French 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.

Rare enough to double-check

sous réserve de is uncommon French outside the top frequency list, classed as aconjunction. Rarity is why readers land here mid-draft. Gloss: "À condition de, si (très restrictif).".

No generated misspelling entries exist for sous réserve de in our index, typically a sign the spelling maps closely to how the word sounds. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Wiktionary doesn't record an etymology for this headword, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct French form is sous réserve de, spelled S-O-U-S- -R-É-S-E-R-V-E- -D-E.

Definition

  1. 1
    À condition de, si (très restrictif).

This word in other languages

vorbehaltlich(Deutsch)

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.

PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "sous réserve de"?
"sous réserve de" is spelled S-O-U-S- -R-É-S-E-R-V-E- -D-E.
What does "sous réserve de" mean?
As a conjunction, "sous réserve de" means: À condition de, si (très restrictif).
What language does "sous réserve de" come from?
"sous réserve de" is a French word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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.
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