Which to use
“seep” is a verb and “sleepy” is an adjective - they look or sound alike but fill different roles in a sentence.
- #37,680
- “seep” frequency rank
- #11,608
- “sleepy” frequency rank
- 49288
- confusion score
Side-by-Side Comparison
| Feature | seep | sleepy |
|---|---|---|
| Definition | To ooze or pass slowly through pores or other small openings, and in overly small quantities; said of liquids, etc. | Tired; feeling the need for sleep. |
Where the eye mixes seep and sleepy
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. seep runs 4 letters (CVVC) against sleepy's 6 (CCVVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses seep with sleepy
These two trip readers on the page rather than in the ear: seep is /siːp/ while sleepy is /ˈsliːpi/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 49288, derived from the frequency rank of both members and their visual similarity.
seep is recorded at frequency rank #37,680, classified as averb, pronounced /siːp/. sleepy is at rank #11,608, tagged as anadj, pronounced /ˈsliːpi/.
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 49288, this pair ranks #185,069 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of seep vs sleepy
Shared letters: eps. Private to "seep": -. Private to "sleepy": ly.
"seep" · 4 letters · shape CVVC · "sleepy" · 6 letters · shape CCVVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "seep" for "sleepy" ever safe?
Frequency check: "seep" vs "sleepy" - which ranks higher?
Useful next steps
Eye-level mix-up between "seep" and "sleepy" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "seep" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sleepy" - compare definitions side by side with the headword page. Word entry
- This pair ranks #185,069 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "seep" and "sleepy" also get mixed up with nearby pairs, the highest-scored neighbour is "SDP vs seep". 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 #185,069 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.