ARPvsaruWhich spelling fits?

Which to use

“ARP” and “aru” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#47,727
“ARP” frequency rank
#48,924
“aru” frequency rank
96651
confusion score

Side-by-Side Comparison

Feature ARP aru
Definition Protocole effectuant la traduction d’une adresse de protocole de couche réseau (typiquement une adresse IP) en une adresse ethernet (typiquement une adresse MAC), ou même de tout matériel de couche de transport. Vagin.

Where the eye mixes ARP and aru

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. ARP (VCC) and aru (VCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
ARP
3 ch
aru

Why the eye confuses ARP with aru

A purely visual mix-up. ARP (\a.ɛʁ.pe\) and aru (\aru\) 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 a single letter - p in “ARP” becomes u in “aru”. Our composite confusion score for this pair is 96651, derived from the frequency rank of both members and their visual similarity.

ARP is recorded at frequency rank #47,727, classified as anoun, pronounced \a.ɛʁ.pe\. aru is at rank #48,924, tagged as anoun, pronounced \aru\.

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 96651, this pair ranks #596 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of ARP vs aru

Shared letters: ar. Private to "ARP": p. Private to "aru": u.

"ARP" · 3 letters · shape VCC  ·  "aru" · 3 letters · shape VCV

Frequently Asked Questions

Is swapping "ARP" for "aru" ever safe?
No. They are said differently (\a.ɛʁ.pe\ versus \aru\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "ARP" or "aru" show up more?
"ARP" is the more common of the two: it sits at frequency rank #47,727 in our French list, against #48,924 for "aru". 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 "ARP" and "aru" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "ARP" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "aru" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #596 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ARP" and "aru" also get mixed up with nearby pairs, the highest-scored neighbour is "aru vs aur". Nearby pair

Confusion rank #596 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list