Which to use
“opt” and “opter” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #42,502
- “opt” frequency rank
- #15,952
- “opter” frequency rank
- 58454
- confusion score
Side-by-Side Comparison
| Feature | opt | opter |
|---|---|---|
| Definition | Opter. | Choisir entre deux ou plusieurs choses qu’on ne peut avoir ensemble, entre deux ou plusieurs partis pour l’un desquels il faut se déterminer. |
Where the eye mixes opt and opter
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: opt vs opter
A purely visual mix-up. opt (\ɒpt\) and opter (\ɔp.te\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 extra letter(s) - “opt” sits inside “opter”. Our composite confusion score for this pair is 58454, derived from the frequency rank of both members and their visual similarity.
opt is recorded at frequency rank #42,502, classified as averb, pronounced \ɒpt\. opter is at rank #15,952, tagged as averb, pronounced \ɔp.te\.
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 58454, this pair ranks #108,988 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of opt vs opter
Shared letters: opt. Private to "opt": -. Private to "opter": er.
"opt" · 3 letters · shape VCC · "opter" · 5 letters · shape VCCVC
Known mistypes of this pair
- opter ← opetr · oppter · opterr · optre · otper
Frequently Asked Questions
Is swapping "opt" for "opter" ever safe?
Frequency check: "opt" vs "opter" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "opt" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "opter" - compare definitions side by side with the headword page. Word entry
- This pair ranks #108,988 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "opt" and "opter" also get mixed up with nearby pairs, the highest-scored neighbour is "och vs opt". 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 #108,988 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.