aptevsaseWhich spelling fits?

Quick tell: apte is a adjective, ase is a noun, so they fill different roles in a sentence.

Which to use

“apte” is an adjective and “ase” is a noun - they look or sound alike but fill different roles in a sentence.

#12,518
“apte” frequency rank
#43,779
“ase” frequency rank
56297
confusion score

Side-by-Side Comparison

Feature apte ase
Definition Qui est propre à quelque chose. Plante herbacée vivace de la famille des Apiaceae, dont l’espèce la plus connue est l’ase fétide (Ferula assa-foetida).

Where the eye mixes apte and ase

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
apte
3 ch
ase

Visual trap between apte and ase

These two trip readers on the page rather than in the ear: apte is \apt\ while ase is \az\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 56297, derived from the frequency rank of both members and their visual similarity.

apte is recorded at frequency rank #12,518, classified as anadj, pronounced \apt\. ase is at rank #43,779, tagged as anoun, pronounced \az\.

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 56297, this pair ranks #121,981 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of apte vs ase

Shared letters: ae. Private to "apte": pt. Private to "ase": s.

"apte" · 4 letters · shape VCCV  ·  "ase" · 3 letters · shape VCV

Known mistypes of this pair

  • apteapet · appte · atpe

Frequently Asked Questions

Can "apte" and "ase" be used interchangeably?
No - they are not even the same part of speech. "apte" is an adjective and "ase" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "apte" or "ase" show up more?
"apte" is the more common of the two: it sits at frequency rank #12,518 in our French list, against #43,779 for "ase". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "apte" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ase" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #121,981 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "apte" and "ase" also get mixed up with nearby pairs, the highest-scored neighbour is "ase vs aves". 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 #121,981 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