à coup sûr

\a ku syʁ\

/\a ku syʁ\/ adv

The verdict

“à coup sûr” is uncommon French (outside the top frequency list), classed as an adverb. The kind of spelling people second-guess.

Unranked
below top-frequency French
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Immanquablement ; sûrement ; infailliblement ; avec certitude.

Corpus desk

Index FR-a-coup-sur · à coup sûr · French

à coup sûr · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "À" 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 à coup sûr
PropertyValue
Headwordà coup sûr
LanguageFrench
Part of speechAdverb
IPA\a ku syʁ\
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « à coup sûr » en français

à coup sûrreste hors des 100.000 mots français les plus fréquents, dans la longue queue du vocabulaire technique, archaïque ou rare, là où le doute d'orthographe frappe.

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

Rare enough to double-check

à coup sûr is uncommon French outside the top frequency list, classed as anadverb, transcribed \a ku syʁ\. Rarity is why readers land here mid-draft. Gloss: "Immanquablement ; sûrement ; infailliblement ; avec certitude.".

No misspelling variants are generated for à coup sûr in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, a sign it's visually distinctive enough not to be mixed up with another word.

No explicit etymology string is stored for this entry, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct French form is à coup sûr, spelled À- -C-O-U-P- -S-Û-R.

Definition

  1. 1
    Immanquablement ; sûrement ; infailliblement ; avec certitude.

Recorded use

Wiktionary examples

These source excerpts show how à coup sûr appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Et sais-tu ce que je me disais à l’instant, en t'apercevant, si gracieuse, qui cueillais les fleurs parmi la rosée du matin? Que les jeunes Parisiennes, et même que les houris qui nous attendent au paradis sont, à coup sûr, moins belles que toi ….
  2. À coup sûr, l'essence de la laïcité, mis à part la séparation de la religion et de l'État, est l'acceptation de la proposition selon laquelle il n'y a pas de finalité des formes, pas de possession exclusive de la vérité absolue et indivisible.

Synonyms

à tous les coupsaussi sûrement qu’émouchet sur poulettes

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 "à coup sûr"?
"à coup sûr" is spelled À- -C-O-U-P- -S-Û-R. The IPA pronunciation is \a ku syʁ\.
What does "à coup sûr" mean?
As an adverb, "à coup sûr" means: Immanquablement ; sûrement ; infailliblement ; avec certitude.
How do you pronounce "à coup sûr"?
The IPA (International Phonetic Alphabet) transcription for "à coup sûr" is \a ku syʁ\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "à coup sûr" come from?
"à coup sûr" 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.

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

Source: FrequencyWords open word-frequency list