Which to use
“sed” is a name and “son” is a noun - they look or sound alike but fill different roles in a sentence.
- #31,340
- “sed” frequency rank
- #534
- “son” frequency rank
- 31874
- confusion score
Side-by-Side Comparison
| Feature | sed | son |
|---|---|---|
| Definition | A noninteractive text editor (originally developed in Unix), intended for making systematic edits in an automatic or batch-oriented way. | One's male offspring. |
Where the eye mixes sed and son
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between sed and son
These two trip readers on the page rather than in the ear: sed is /sɛd/ while son is /sʌn/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 31874, 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/. son is at rank #534, tagged as anoun, pronounced /sʌn/.
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 31874, this pair ranks #342,507 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of sed vs son
Shared letters: s. Private to "sed": de. Private to "son": no.
"sed" · 3 letters · shape CVC · "son" · 3 letters · shape CVC
Frequently Asked Questions
Do "sed" and "son" mean the same thing in a sentence?
Which is more common, "sed" or "son"?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "sed" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "son" - compare definitions side by side with the headword page. Word entry
- This pair ranks #342,507 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sed" and "son" also get mixed up with nearby pairs, the highest-scored neighbour is "sed vs suds". Nearby pair
Confusion rank #342,507 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.