robovsRotorWhich spelling fits?

Which to use

“robo” and “Rotor” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#47,698
“robo” frequency rank
#46,242
“Rotor” frequency rank
93940
confusion score

Side-by-Side Comparison

Feature robo Rotor
Definition Vokativ Singular des Substantivs roba rotierendes Teil einer Maschine

Where the eye mixes robo and Rotor

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. robo runs 4 letters (CVCV) against Rotor's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
robo
5 ch
Rotor

Why the eye confuses robo with Rotor

A purely visual mix-up. robo ([ˈrɔ̂bɔ]) and Rotor ([ˈʁoːtoːɐ̯]) 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 1 letter(s) in length. Our composite confusion score for this pair is 93940, derived from the frequency rank of both members and their visual similarity.

robo is recorded at frequency rank #47,698, classified as anoun, pronounced [ˈrɔ̂bɔ]. 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 93940, this pair ranks #19,700 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of robo vs Rotor

Shared letters: or. Private to "robo": b. Private to "Rotor": t.

"robo" · 4 letters · shape CVCV  ·  "Rotor" · 5 letters · shape CVCVC

Known mistypes of this pair

  • robo ← orbo · rboo · robbo · roob · rrobo
  • Rotor ← ortor · rootr · rotorr · rotro · rottor · rrotor · rtoor

Frequently Asked Questions

Can "robo" and "Rotor" be used interchangeably?
No. They are said differently ([ˈrɔ̂bɔ] versus [ˈʁoːtoːɐ̯]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary German text, does "robo" or "Rotor" show up more?
"Rotor" is the more common of the two: it sits at frequency rank #46,242 in our German list, against #47,698 for "robo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "robo" 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 #19,700 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "robo" and "Rotor" also get mixed up with nearby pairs, the highest-scored neighbour is "robo vs RUB". 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 #19,700 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