CQFD
\se.ky.ɛf.de\
The verdict
“CQFD” has 7 generated spelling variants in the French index at frequency #23,820. The variants make it a useful spelling check.
- #23,820
- frequency rank, French
- 8,609
- “C” headwords
- 7
- tracked misspellings
- 19
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Ce qu’il fallait démontrer, dans une démonstration logique ou mathématique.
Corpus desk
Index FR-cqfd · CQFD · French
CQFD · rank #23,820 · 7 variants · 19 confusables
- FREQ-MID #23,820
- LEN-MID 4 letters
- VOW-0 0 vowels
- CONFUS-HIGH 19 pairs
- VAR-MID 7 variants
- BOOK-DENSE 8,609
- PHOTO-FINISH CPU
Nearest frequency peer: CPU (-1 rank slots)
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.
Pairs de rang près de l'aimant d'erreurs « CQFD »
Même bande de rareté: utile si une faute tombe sur un lemme voisin
- corrosion
corrosion
76,185 corpus weight
- cotées
cotées
76,184 corpus weight
- couscous
couscous
76,183 corpus weight
- CPU
CPU
76,182 corpus weight
- CQFD
CQFD
76,181 corpus weight
- cricket
cricket
76,180 corpus weight
What this shows « CQFD » siège parmi ces pairs FrequencyWords; la profondeur des fautes est suivie à part dans le graphique d'édition.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | CQFD |
| Language | French |
| Part of speech | Interjection |
| IPA | \se.ky.ɛf.de\ |
| Letters | 4 |
| Frequency rank | #23,820 |
| Misspellings tracked | 7 |
| Confusable pairs | 19 |
| Source | Wiktionary (kaikki.org) |
Fréquence de l'aimant d'erreurs « CQFD »
A misspelling magnet
The generator records 7 spelling variants around CQFD (IPA \se.ky.ɛf.de\), aninterjection. Corpus frequency is #23,820 among 8,609 “C” headwords. Dominant gloss: "Ce qu’il fallait démontrer, dans une démonstration logique ou mathématique.".
Our generated misspelling index lists 7 likely wrong-spelling variants for CQFD, with forms such as "ccqfd", "cfqd", and "cqdf". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 19 confusable-pair relationships, "CD", "CFA", "CAF", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
No explicit etymology string is stored for this entry, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct French form is CQFD, spelled C-Q-F-D.
Definition
- 1Ce qu’il fallait démontrer, dans une démonstration logique ou mathématique.
Recorded use
Wiktionary exampleThese source excerpts show how CQFD appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Quand on tourne une manivelle il joue un petit air aigrelet, triste et comique, saccadé comme les pas d’un vieillard, qui se termine à la façon d’un théorème par une espèce d’accord secret grêlement triomphant qui a l’air de dire CQFD.
This word in other languages
Common misspellings
Also misspelled as:
- ccqfd
- cfqd
- cqdf
- cqfdd
- cqffd
- cqqfd
- qcfd
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of CQFD - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 French corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "CQFD"?
What does "CQFD" mean?
What words are commonly confused with "CQFD"?
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Similar French words by spelling shape
Same letter count and similar misspelling depth for "CQFD", not the corpus desk frequency band.
Same letter count
Frequency-ranked French headwords with 4 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (7 here; floor ≥5).