RAvsRfWhich spelling fits?

Which to use

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

#9,610
“RA” frequency rank
#29,306
“Rf” frequency rank
38916
confusion score

Side-by-Side Comparison

Feature RA Rf
Definition Rechtsanwalt, Rechtsanwältin Rutherfordium

Letter map: RA vs Rf

Shared letters muted; letters that set RA and Rf apart highlighted. Shared run: 1.

2 ch
RA
2 ch
Rf

Pair insight - RA / Rf

RA and Rf are indexed as a confusable German pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by a single letter - a in “RA” becomes f in “Rf”. Our composite confusion score for this pair is 38916, derived from the frequency rank of both members and their visual similarity.

RA is recorded at frequency rank #9,610, classified as anabbrev, pronounced […]. Rf is at rank #29,306, tagged as anabbrev.

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 38916, this pair ranks #1,551,198 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of RA vs Rf

Shared letters: r. Private to "RA": a. Private to "Rf": f.

"RA" · 2 letters · shape CV  ·  "Rf" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "RA" for "Rf" ever safe?
No. They differ by a single letter - a in “RA” becomes f in “Rf”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "RA" vs "Rf" - which ranks higher?
"RA" is the more common of the two: it sits at frequency rank #9,610 in our German list, against #29,306 for "Rf". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "RA" vs "Rf" is on the table, pick a follow-up below.

  • Full dictionary entry for "RA" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Rf" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,551,198 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "RA" and "Rf" also get mixed up with nearby pairs, the highest-scored neighbour is "Rf vs RUB". Nearby pair

Confusion rank #1,551,198 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