Which to use
“flat” is an adjective and “fléau” is a noun - they look or sound alike but fill different roles in a sentence.
- #26,369
- “flat” frequency rank
- #10,502
- “fléau” frequency rank
- 36871
- confusion score
Side-by-Side Comparison
| Feature | flat | fléau |
|---|---|---|
| Definition | Se dit du ver à soie atteint de flacherie. | Instrument composé de deux bâtons attachés l’un à l’autre à leur bout par un lien flexible, et qui sert à battre le grain pour le séparer de la tige et de l'épi, à la manière d’un fouet rigide. L’un des deux bâtons est le manche de l’outil, l’autre en est la lame. |
Where the spellings diverge
Shared letters are muted; the letters that actually set flat and fléau apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: flat is \fla\ while fléau is \fle.o\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 36871, derived from the frequency rank of both members and their visual similarity.
flat is recorded at frequency rank #26,369, classified as anadj, pronounced \fla\. fléau is at rank #10,502, tagged as anoun, pronounced \fle.o\.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 36871, this pair ranks #266,549 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of flat vs fléau
Shared letters: afl. Private to "flat": t. Private to "fléau": ué.
"flat" · 4 letters · shape CCVC · "fléau" · 5 letters · shape CCVVV
Known mistypes of this pair
- flat ← falt · fflat · flatt · fllat · flta · lfat
Frequency comparison
Frequently Asked Questions
Can "flat" and "fléau" be used interchangeably?
Which is more common, "flat" or "fléau"?
Remembering flat vs fléau
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “flat”; for a noun, it's “fléau”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “flat” entry
- Browse more pairs most likely to be confused. Most confusable