ADPvsanConfusable pair

Which to use

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

#17,330
“ADP” frequency rank
#363
“an” frequency rank
17693
confusion score

Side-by-Side Comparison

Feature ADP an
Definition Sigle de l’adénosine diphosphate, molécule intervenant couramment dans les organismes vivants pour permettre des échanges d’énergie. Temps que met la Terre à accomplir une révolution autour du Soleil et qui se divise en douze mois. Année (voir Notes plus bas).

Where the eye mixes ADP and an

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

3 ch
ADP
2 ch
an

Look-alike desk: ADP vs an

A purely visual mix-up. ADP (\a de pe\) and an (\ɑ̃\) 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 17693, derived from the frequency rank of both members and their visual similarity.

ADP is recorded at frequency rank #17,330, classified as anoun, pronounced \a de pe\. an is at rank #363, tagged as anoun, pronounced \ɑ̃\.

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 17693, this pair ranks #381,933 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ADP vs an

Shared letters: a. Private to "ADP": dp. Private to "an": n.

"ADP" · 3 letters · shape VCC  ·  "an" · 2 letters · shape VC

Frequently Asked Questions

Do "ADP" and "an" mean the same thing in a sentence?
No. They are said differently (\a de pe\ versus \ɑ̃\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "ADP" or "an" show up more?
"an" is the more common of the two: it sits at frequency rank #363 in our French list, against #17,330 for "ADP". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "ADP" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "an" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #381,933 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ADP" and "an" also get mixed up with nearby pairs, the highest-scored neighbour is "ADP vs aur". Nearby pair

Confusion rank #381,933 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