Which to use
“coincidental” is an adjective and “coincidentally” is an adverb - they look or sound alike but fill different roles in a sentence.
- #30,736
- “coincidental” frequency rank
- #21,162
- “coincidentally” frequency rank
- 51898
- confusion score
Side-by-Side Comparison
| Feature | coincidental | coincidentally |
|---|---|---|
| Definition | Occurring as or resulting from coincidence. | In a coincidental manner. |
Letter map: coincidental vs coincidentally
Shared letters muted; letters that set coincidental and coincidentally apart highlighted. Shared run: 12. coincidental runs 12 letters (CVVCCVCVCCVC) against coincidentally's 14 (CVVCCVCVCCVCCV) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: coincidental vs coincidentally
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: coincidental is anadjective and coincidentallyanadverb. On the page they differ by 2 extra letter(s) - “coincidental” sits inside “coincidentally”. Our composite confusion score for this pair is 51898, derived from the frequency rank of both members and their visual similarity.
coincidental is recorded at frequency rank #30,736, classified as anadj, pronounced /ˈkəʊ.ɪn.sɪˌdɛn.tl̩/. coincidentally is at rank #21,162, 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 51898, this pair ranks #161,556 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of coincidental vs coincidentally
Shared letters: acdeilnot. Private to "coincidental": -. Private to "coincidentally": y.
"coincidental" · 12 letters · shape CVVCCVCVCCVC · "coincidentally" · 14 letters · shape CVVCCVCVCCVCCV
Known mistypes of this pair
- coincidental ← ccoincidental · cioncidental · coicnidental · coinccidental · coincdiental · coinciddental · coincidenatl · coincidenntal
- coincidentally ← ccoincidentally · cioncidentally · coicnidentally · coinccidentally · coincdientally · coinciddentally · coincidenatlly · coincidenntally
Frequently Asked Questions
Do "coincidental" and "coincidentally" mean the same thing in a sentence?
Frequency check: "coincidental" vs "coincidentally" - which ranks higher?
Useful next steps
You've compared "coincidental" and "coincidentally". Here's where to go from here.
- Full dictionary entry for "coincidental" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "coincidentally" - compare definitions side by side with the headword page. Word entry
- This pair ranks #161,556 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 #161,556 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.