sedvsspeedTell them apart

Which to use

“sed” and “speed” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#37,064
“sed” frequency rank
#9,917
“speed” frequency rank
46981
confusion score

Side-by-Side Comparison

Feature sed speed
Definition Soif. Amphétamine utilisée comme drogue.

Where the eye mixes sed and speed

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

3 ch
sed
5 ch
speed

Why the eye confuses sed with speed

A purely visual mix-up. sed (\seð\) and speed (\spid\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 letter(s) in length. Our composite confusion score for this pair is 46981, derived from the frequency rank of both members and their visual similarity.

sed is recorded at frequency rank #37,064, classified as anoun, pronounced \seð\. speed is at rank #9,917, tagged as anoun, pronounced \spid\.

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 46981, this pair ranks #190,557 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sed vs speed

Shared letters: des. Private to "sed": -. Private to "speed": p.

"sed" · 3 letters · shape CVC  ·  "speed" · 5 letters · shape CCVVC

Known mistypes of this pair

  • speedpseed · seped · sped · spede · speedd · sppeed · sspeed

Frequently Asked Questions

Is swapping "sed" for "speed" ever safe?
No. They are said differently (\seð\ versus \spid\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "sed" or "speed"?
"speed" is the more common of the two: it sits at frequency rank #9,917 in our French list, against #37,064 for "sed". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "sed" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "speed" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #190,557 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "sed" and "speed" also get mixed up with nearby pairs, the highest-scored neighbour is "sed vs suu". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #190,557 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list