Which to use
“optical” is an adjective and “optically” is an adverb - they look or sound alike but fill different roles in a sentence.
- #6,391
- “optical” frequency rank
- #40,822
- “optically” frequency rank
- 47213
- confusion score
Side-by-Side Comparison
| Feature | optical | optically |
|---|---|---|
| Definition | Of or relating to sight; visual. | regarding or using optics |
Letter map: optical vs optically
Shared letters muted; letters that set optical and optically apart highlighted. Shared run: 7.
Grammar separator: optical vs optically
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: optical is anadjective and opticallyanadverb. On the page they differ by 2 extra letter(s) - “optical” sits inside “optically”. Our composite confusion score for this pair is 47213, derived from the frequency rank of both members and their visual similarity.
optical is recorded at frequency rank #6,391, classified as anadj, pronounced /ˈɒptɪkəl/. optically is at rank #40,822, tagged as anadv.
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 47213, this pair ranks #204,506 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of optical vs optically
Shared letters: acilopt. Private to "optical": -. Private to "optically": y.
"optical" · 7 letters · shape VCCVCVC · "optically" · 9 letters · shape VCCVCVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "optical" and "optically" mean the same thing in a sentence?
Frequency check: "optical" vs "optically" - which ranks higher?
After this comparison
Done with this confusable. These links stay specific to "optical" and "optically".
- Full dictionary entry for "optical" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "optically" - compare definitions side by side with the headword page. Word entry
- This pair ranks #204,506 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "optical" and "optically" also get mixed up with nearby pairs, the highest-scored neighbour is "optically vs optionally". 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 #204,506 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.