FBIvsfoxWhich spelling fits?

Quick tell: FBI is a abbrev, fox is a noun, so they fill different roles in a sentence.

Which to use

“FBI” is an abbrev and “fox” is a noun - they look or sound alike but fill different roles in a sentence.

#9,189
“FBI” frequency rank
#6,658
“fox” frequency rank
15847
confusion score

Side-by-Side Comparison

Feature FBI fox
Definition Federal Bureau of Investigation, die Ermittlungsbehörde der Vereinigten Staaten von Amerika der Fuchs

Where the eye mixes FBI and fox

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
FBI
3 ch
fox

Why the eye confuses FBI with fox

These two trip readers on the page rather than in the ear: FBI is [ɛfbiːˈʔaɪ̯] while fox is [fɒks]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (abbrev vs noun), which is usually the fastest check. Our composite confusion score for this pair is 15847, derived from the frequency rank of both members and their visual similarity.

FBI is recorded at frequency rank #9,189, classified as anabbrev, pronounced [ɛfbiːˈʔaɪ̯]. fox is at rank #6,658, tagged as anoun, pronounced [fɒks].

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 15847, this pair ranks #1,940,669 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of FBI vs fox

Shared letters: f. Private to "FBI": bi. Private to "fox": ox.

"FBI" · 3 letters · shape CCV  ·  "fox" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "FBI" for "fox" ever safe?
No - they are not even the same part of speech. "FBI" is an abbrev and "fox" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "FBI" or "fox" show up more?
"fox" is the more common of the two: it sits at frequency rank #6,658 in our German list, against #9,189 for "FBI". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "FBI" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fox" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,940,669 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "FBI" and "fox" also get mixed up with nearby pairs, the highest-scored neighbour is "fay vs FBI". Nearby pair

Confusion rank #1,940,669 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