smutvsSuiTell them apart

Quick tell: smut is a noun, Sui is a name, so they fill different roles in a sentence.

Which to use

“smut” is a noun and “Sui” is a name - they look or sound alike but fill different roles in a sentence.

#34,290
“smut” frequency rank
#28,040
“Sui” frequency rank
62330
confusion score

Side-by-Side Comparison

Feature smut Sui
Definition Soot. The Sui dynasty of China which ruled from 581 to 618.

Where the eye mixes smut and Sui

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
smut
3 ch
Sui

Why the eye confuses smut with Sui

These two trip readers on the page rather than in the ear: smut is /smʌt/ while Sui is /sweɪ/. 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 (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 62330, derived from the frequency rank of both members and their visual similarity.

smut is recorded at frequency rank #34,290, classified as anoun, pronounced /smʌt/. Sui is at rank #28,040, tagged as aname, pronounced /sweɪ/.

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 62330, this pair ranks #89,115 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of smut vs Sui

Shared letters: su. Private to "smut": mt. Private to "Sui": i.

"smut" · 4 letters · shape CCVC  ·  "Sui" · 3 letters · shape CVV

Known mistypes of this pair

  • smutsmmut · smtu · smutt · ssmut · sumt

Frequently Asked Questions

Can "smut" and "Sui" be used interchangeably?
No - they are not even the same part of speech. "smut" is a noun and "Sui" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "smut" or "Sui" show up more?
"Sui" is the more common of the two: it sits at frequency rank #28,040 in our English list, against #34,290 for "smut". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "smut" and "Sui" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "smut" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Sui" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #89,115 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "smut" and "Sui" also get mixed up with nearby pairs, the highest-scored neighbour is "smut vs sturt". 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 #89,115 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list