Which to use
“onus” is a noun and “oust” is a verb - they look or sound alike but fill different roles in a sentence.
- #29,402
- “onus” frequency rank
- #31,281
- “oust” frequency rank
- 60683
- confusion score
Side-by-Side Comparison
| Feature | onus | oust |
|---|---|---|
| Definition | A legal obligation. | To expel; to remove. |
Where the eye mixes onus and oust
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. onus (VCVC) and oust (VVCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Look-alike desk: onus vs oust
These two trip readers on the page rather than in the ear: onus is /ˈəʊnəs/ while oust is /aʊst/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 60683, derived from the frequency rank of both members and their visual similarity.
onus is recorded at frequency rank #29,402, classified as anoun, pronounced /ˈəʊnəs/. oust is at rank #31,281, tagged as averb, pronounced /aʊst/.
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 60683, this pair ranks #98,726 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of onus vs oust
Shared letters: osu. Private to "onus": n. Private to "oust": t.
"onus" · 4 letters · shape VCVC · "oust" · 4 letters · shape VVCC
Known mistypes of this pair
Frequently Asked Questions
Do "onus" and "oust" mean the same thing in a sentence?
Frequency check: "onus" vs "oust" - which ranks higher?
Useful next steps
Eye-level mix-up between "onus" and "oust" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "onus" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "oust" - compare definitions side by side with the headword page. Word entry
- This pair ranks #98,726 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "onus" and "oust" also get mixed up with nearby pairs, the highest-scored neighbour is "oust vs OWS". 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 #98,726 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.