Which to use
“horizontal” is an adjective and “horizontally” is an adverb - they look or sound alike but fill different roles in a sentence.
- #8,299
- “horizontal” frequency rank
- #19,615
- “horizontally” frequency rank
- 27914
- confusion score
Side-by-Side Comparison
| Feature | horizontal | horizontally |
|---|---|---|
| Definition | Perpendicular to the vertical; parallel to the plane of the horizon; level, flat. | In a horizontal direction or position. |
Letter map: horizontal vs horizontally
Shared letters muted; letters that set horizontal and horizontally apart highlighted. Shared run: 10. horizontal runs 10 letters (CVCVCVCCVC) against horizontally's 12 (CVCVCVCCVCCV) - the length gap alone is often enough to separate them once you know to check it.
Part-of-speech tell for horizontal / horizontally
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: horizontal is anadjective and horizontallyanadverb. On the page they differ by 2 extra letter(s) - “horizontal” sits inside “horizontally”. Our composite confusion score for this pair is 27914, derived from the frequency rank of both members and their visual similarity.
horizontal is recorded at frequency rank #8,299, classified as anadj, pronounced /ˌhɒɹɪˈzɒntəl/. horizontally is at rank #19,615, 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 27914, this pair ranks #375,124 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of horizontal vs horizontally
Shared letters: ahilnortz. Private to "horizontal": -. Private to "horizontally": y.
"horizontal" · 10 letters · shape CVCVCVCCVC · "horizontally" · 12 letters · shape CVCVCVCCVCCV
Known mistypes of this pair
- horizontal ← hhorizontal · hoirzontal · horiozntal · horiznotal · horizonatl · horizonntal · horizontall · horizontla
- horizontally ← hhorizontally · hoirzontally · horiozntally · horiznotally · horizonatlly · horizonntally · horizontallyy · horizontaly
Frequently Asked Questions
Can "horizontal" and "horizontally" be used interchangeably?
In ordinary English text, does "horizontal" or "horizontally" show up more?
Useful next steps
Pair "horizontal" vs "horizontally" is on the table, pick a follow-up below.
- Full dictionary entry for "horizontal" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "horizontally" - compare definitions side by side with the headword page. Word entry
- This pair ranks #375,124 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- 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 #375,124 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.