Which to use
“fractional” and “functional” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #27,152
- “fractional” frequency rank
- #4,761
- “functional” frequency rank
- 31913
- confusion score
Side-by-Side Comparison
| Feature | fractional | functional |
|---|---|---|
| Definition | Pertaining to a fraction. | In good working order. |
Where the eye mixes fractional and functional
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.
Visual trap between fractional and functional
A purely visual mix-up. fractional (/ˈfɹæk.ʃən.əl/) and functional (/ˈfʌŋkt͡ʃənəl/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 31913, derived from the frequency rank of both members and their visual similarity.
fractional is recorded at frequency rank #27,152, classified as anadj, pronounced /ˈfɹæk.ʃən.əl/. functional is at rank #4,761, tagged as anadj, pronounced /ˈfʌŋkt͡ʃənəl/.
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 31913, this pair ranks #342,152 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of fractional vs functional
Shared letters: acfilnot. Private to "fractional": r. Private to "functional": u.
"fractional" · 10 letters · shape CCVCCVVCVC · "functional" · 10 letters · shape CVCCCVVCVC
Known mistypes of this pair
- fractional ← farctional · ffractional · fracctional · fracitonal · fractinoal · fractioanl · fractionall · fractionla
- functional ← ffunctional · fnuctional · fucntional · funcctional · funcitonal · functinoal · functioanl · functionall
Frequently Asked Questions
Is swapping "fractional" for "functional" ever safe?
Frequency check: "fractional" vs "functional" - which ranks higher?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "fractional" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "functional" - compare definitions side by side with the headword page. Word entry
- This pair ranks #342,152 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "fractional" and "functional" also get mixed up with nearby pairs, the highest-scored neighbour is "factional vs fractional". 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 #342,152 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.