rotervsRotorWhat's the difference?

Quick tell: roter is a adjective, Rotor is a noun, so they fill different roles in a sentence.

Which to use

“roter” is an adjective and “Rotor” is a noun - they look or sound alike but fill different roles in a sentence.

#6,846
“roter” frequency rank
#46,242
“Rotor” frequency rank
53088
confusion score

Side-by-Side Comparison

Feature roter Rotor
Definition Nominativ Singular Maskulinum der starken Flexion des Positivs des Adjektivs rot rotierendes Teil einer Maschine

Where the eye mixes roter and Rotor

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. roter and Rotor follow the identical consonant-vowel pattern (CVCVC). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
roter
5 ch
Rotor

Why the eye confuses roter with Rotor

These two trip readers on the page rather than in the ear: roter is [ˈʁoːtɐ] while Rotor is [ˈʁoːtoːɐ̯]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - e in “roter” becomes o in “Rotor”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 53088, derived from the frequency rank of both members and their visual similarity.

roter is recorded at frequency rank #6,846, classified as anadj, pronounced [ˈʁoːtɐ]. Rotor is at rank #46,242, tagged as anoun, pronounced [ˈʁoːtoːɐ̯].

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 53088, this pair ranks #1,071,555 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of roter vs Rotor

Shared letters: ort. Private to "roter": e. Private to "Rotor": -.

"roter" · 5 letters · shape CVCVC  ·  "Rotor" · 5 letters · shape CVCVC

Known mistypes of this pair

  • roter ← orter · roetr · roterr · rotre · rotter · rroter · rtoer
  • Rotor ← ortor · rootr · rotorr · rotro · rottor · rrotor · rtoor

Frequently Asked Questions

Is swapping "roter" for "Rotor" ever safe?
No - they are not even the same part of speech. "roter" is an adjective and "Rotor" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "roter" or "Rotor" show up more?
"roter" is the more common of the two: it sits at frequency rank #6,846 in our German list, against #46,242 for "Rotor". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "roter" and "Rotor" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "roter" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Rotor" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,071,555 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "roter" and "Rotor" also get mixed up with nearby pairs, the highest-scored neighbour is "robo vs Rotor". 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 #1,071,555 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list