Which to use
“obs” is a verb and “onu” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #13,851
- “obs” frequency rank
- #4,259
- “onu” frequency rank
- 18110
- confusion score
Side-by-Side Comparison
| Feature | obs | onu |
|---|---|---|
| Definition | Deuxième personne du singulier de l’impératif présent de obsen. | Accusatif de o. |
Where the eye mixes obs and onu
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: obs vs onu
These two trip readers on the page rather than in the ear: obs is \ɔps\ while onu is \o.ˈnu\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 18110, derived from the frequency rank of both members and their visual similarity.
obs is recorded at frequency rank #13,851, classified as averb, pronounced \ɔps\. onu is at rank #4,259, tagged as apron, pronounced \o.ˈnu\.
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 18110, this pair ranks #379,947 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of obs vs onu
Shared letters: o. Private to "obs": bs. Private to "onu": nu.
"obs" · 3 letters · shape VCC · "onu" · 3 letters · shape VCV
Frequently Asked Questions
Do "obs" and "onu" mean the same thing in a sentence?
Which is more common, "obs" or "onu"?
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 "obs" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "onu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #379,947 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "obs" and "onu" also get mixed up with nearby pairs, the highest-scored neighbour is "obs vs och". Nearby pair
Confusion rank #379,947 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.