Which to use
“rational” and “rationaler” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #16,522
- “rational” frequency rank
- #48,406
- “rationaler” frequency rank
- 64928
- confusion score
Side-by-Side Comparison
| Feature | rational | rationaler |
|---|---|---|
| Definition | mit dem Verstand, der Vernunft zu tun habend | Nominativ Singular Maskulinum der starken Deklination des Positivs des Adjektivs rational |
Where the eye mixes rational and rationaler
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.
Visual trap between rational and rationaler
A purely visual mix-up. rational ([ˌʁat͡si̯oˈnaːl]) and rationaler ([ˌʁat͡si̯oˈnaːlɐ]) 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) - “rational” sits inside “rationaler”. Our composite confusion score for this pair is 64928, derived from the frequency rank of both members and their visual similarity.
rational is recorded at frequency rank #16,522, classified as anadj, pronounced [ˌʁat͡si̯oˈnaːl]. rationaler is at rank #48,406, tagged as anadj, pronounced [ˌʁat͡si̯oˈnaːlɐ].
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 64928, this pair ranks #624,469 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of rational vs rationaler
Shared letters: ailnort. Private to "rational": -. Private to "rationaler": e.
"rational" · 8 letters · shape CVCVVCVC · "rationaler" · 10 letters · shape CVCVVCVCVC
Known mistypes of this pair
- rational ← artional · raitonal · ratinoal · ratioanl · rationall · rationla · rationnal · ratoinal
- rationaler ← artionaler · raitonaler · ratinoaler · ratioanler · rationaelr · rationalerr · rationaller · rationalre
Frequently Asked Questions
Do "rational" and "rationaler" mean the same thing in a sentence?
Which is more common, "rational" or "rationaler"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "rational" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rationaler" - compare definitions side by side with the headword page. Word entry
- This pair ranks #624,469 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "rational" and "rationaler" also get mixed up with nearby pairs, the highest-scored neighbour is "rationalen vs rationaler". 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 #624,469 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.