Which to use
“sed” is a name and “sez” is a verb - they look or sound alike but fill different roles in a sentence.
- #31,340
- “sed” frequency rank
- #49,041
- “sez” frequency rank
- 80381
- confusion score
Side-by-Side Comparison
| Feature | sed | sez |
|---|---|---|
| Definition | A noninteractive text editor (originally developed in Unix), intended for making systematic edits in an automatic or batch-oriented way. | Eye dialect spelling of says. |
Where the eye mixes sed and sez
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. sed and sez follow the identical consonant-vowel pattern (CVC). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses sed with sez
These two trip readers on the page rather than in the ear: sed is /sɛd/ while sez is /sɛz/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - d in “sed” becomes z in “sez”, and the parts of speech differ too (name vs verb), which is usually the fastest check. Our composite confusion score for this pair is 80381, derived from the frequency rank of both members and their visual similarity.
sed is recorded at frequency rank #31,340, classified as aname, pronounced /sɛd/. sez is at rank #49,041, tagged as averb, pronounced /sɛz/.
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 80381, this pair ranks #19,912 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of sed vs sez
Shared letters: es. Private to "sed": d. Private to "sez": z.
"sed" · 3 letters · shape CVC · "sez" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "sed" for "sez" ever safe?
Which is more common, "sed" or "sez"?
Useful next steps
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 "sez" - compare definitions side by side with the headword page. Word entry
- This pair ranks #19,912 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sed" and "sez" also get mixed up with nearby pairs, the highest-scored neighbour is "sez vs Sif". Nearby pair
Confusion rank #19,912 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.