Which to use
“sue” is a verb and “sum” is a noun - they look or sound alike but fill different roles in a sentence.
- #4,985
- “sue” frequency rank
- #4,050
- “sum” frequency rank
- 9035
- confusion score
Side-by-Side Comparison
| Feature | sue | sum |
|---|---|---|
| Definition | To file a legal action against someone, generally a non-criminal (civil) action. | A quantity obtained by addition or aggregation. |
Where the eye mixes sue and sum
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: sue vs sum
These two trip readers on the page rather than in the ear: sue is /sjuː/ while sum is /sʌm/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - e in “sue” becomes m in “sum”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 9035, derived from the frequency rank of both members and their visual similarity.
sue is recorded at frequency rank #4,985, classified as averb, pronounced /sjuː/. sum is at rank #4,050, tagged as anoun, pronounced /sʌm/.
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 9035, this pair ranks #499,406 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sue vs sum
Shared letters: su. Private to "sue": e. Private to "sum": m.
"sue" · 3 letters · shape CVV · "sum" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "sue" for "sum" ever safe?
Which is more common, "sue" or "sum"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "sue" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #499,406 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sue" and "sum" also get mixed up with nearby pairs, the highest-scored neighbour is "sue vs sura". Nearby pair
Confusion rank #499,406 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.