acsvsactaWhich spelling fits?

Quick tell: acs is a noun, acta is a verb, so they fill different roles in a sentence.

Which to use

“acs” is a noun and “acta” is a verb - they look or sound alike but fill different roles in a sentence.

#45,982
“acs” frequency rank
#27,310
“acta” frequency rank
73292
confusion score

Side-by-Side Comparison

Feature acs acta
Definition Pluriel d’ac. Troisième personne du singulier du passé simple du verbe acter.

Where the eye mixes acs and acta

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. acs runs 3 letters (VCC) against acta's 4 (VCCV) - the length gap alone is often enough to separate them once you know to check it.

3 ch
acs
4 ch
acta

Visual trap between acs and acta

These two trip readers on the page rather than in the ear: acs is \ˈat͡s\ while acta is \ak.ta\. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 73292, derived from the frequency rank of both members and their visual similarity.

acs is recorded at frequency rank #45,982, classified as anoun, pronounced \ˈat͡s\. acta is at rank #27,310, tagged as averb, pronounced \ak.ta\.

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 73292, this pair ranks #40,981 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of acs vs acta

Shared letters: ac. Private to "acs": s. Private to "acta": t.

"acs" · 3 letters · shape VCC  ·  "acta" · 4 letters · shape VCCV

Known mistypes of this pair

  • acta ← acat · accta · actta · atca

Frequently Asked Questions

Can "acs" and "acta" be used interchangeably?
No - they are not even the same part of speech. "acs" is a noun and "acta" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "acs" or "acta"?
"acta" is the more common of the two: it sits at frequency rank #27,310 in our French list, against #45,982 for "acs". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "acs" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "acta" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #40,981 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "acs" and "acta" also get mixed up with nearby pairs, the highest-scored neighbour is "acs 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 #40,981 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