Which to use
“sleuth” and “slough” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #45,664
- “sleuth” frequency rank
- #26,965
- “slough” frequency rank
- 72629
- confusion score
Side-by-Side Comparison
| Feature | sleuth | slough |
|---|---|---|
| Definition | A detective. | The skin shed by a snake or other reptile. |
Where the eye mixes sleuth and slough
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. sleuth and slough follow the identical consonant-vowel pattern (CCVVCC). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses sleuth with slough
A purely visual mix-up. sleuth (/sluːθ/) and slough (/slʌf/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 72629, derived from the frequency rank of both members and their visual similarity.
sleuth is recorded at frequency rank #45,664, classified as anoun, pronounced /sluːθ/. slough is at rank #26,965, tagged as anoun, pronounced /slʌf/.
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 72629, this pair ranks #42,410 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of sleuth vs slough
Shared letters: hlsu. Private to "sleuth": et. Private to "slough": go.
"sleuth" · 6 letters · shape CCVVCC · "slough" · 6 letters · shape CCVVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "sleuth" for "slough" ever safe?
Frequency check: "sleuth" vs "slough" - which ranks higher?
Useful next steps
Eye-level mix-up between "sleuth" and "slough" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "sleuth" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "slough" - compare definitions side by side with the headword page. Word entry
- This pair ranks #42,410 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sleuth" and "slough" also get mixed up with nearby pairs, the highest-scored neighbour is "sleuth vs slouch". 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 #42,410 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.