Which to use
“slew” is a noun and “sly” is an adjective - they look or sound alike but fill different roles in a sentence.
- #18,697
- “slew” frequency rank
- #17,246
- “sly” frequency rank
- 35943
- confusion score
Side-by-Side Comparison
| Feature | slew | sly |
|---|---|---|
| Definition | The act, or process of slewing. | Artfully cunning; secretly mischievous; wily. |
Where the eye mixes slew and sly
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between slew and sly
These two trip readers on the page rather than in the ear: slew is /sl(j)uː/ while sly is /slaɪ/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 35943, derived from the frequency rank of both members and their visual similarity.
slew is recorded at frequency rank #18,697, classified as anoun, pronounced /sl(j)uː/. sly is at rank #17,246, tagged as anadj, pronounced /slaɪ/.
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 35943, this pair ranks #307,572 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of slew vs sly
Shared letters: ls. Private to "slew": ew. Private to "sly": y.
"slew" · 4 letters · shape CCVC · "sly" · 3 letters · shape CCV
Known mistypes of this pair
- slew ← lsew · selw · sleww · sllew · slwe · sslew
Frequently Asked Questions
Do "slew" and "sly" mean the same thing in a sentence?
Which is more common, "slew" or "sly"?
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 "slew" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sly" - compare definitions side by side with the headword page. Word entry
- This pair ranks #307,572 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "slew" and "sly" also get mixed up with nearby pairs, the highest-scored neighbour is "sez vs slew". 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 #307,572 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.