actvsactusWhich spelling fits?

Which to use

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

#10,437
“act” frequency rank
#29,622
“actus” frequency rank
40059
confusion score

Side-by-Side Comparison

Feature act actus
Definition Action. Pluriel de actu.

Where the eye mixes act and actus

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

3 ch
act
5 ch
actus

Look-alike desk: act vs actus

A purely visual mix-up. act (\ækt\) and actus (\ak.ty\) 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 2 extra letter(s) - “act” sits inside “actus”. Our composite confusion score for this pair is 40059, derived from the frequency rank of both members and their visual similarity.

act is recorded at frequency rank #10,437, classified as anoun, pronounced \ækt\. actus is at rank #29,622, tagged as anoun, pronounced \ak.ty\.

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 40059, this pair ranks #243,369 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of act vs actus

Shared letters: act. Private to "act": -. Private to "actus": su.

"act" · 3 letters · shape VCC  ·  "actus" · 5 letters · shape VCCVC

Known mistypes of this pair

  • actusactsu · acttus · actuss · acuts · atcus · catus

Frequently Asked Questions

Is swapping "act" for "actus" ever safe?
No. They are said differently (\ækt\ versus \ak.ty\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "act" or "actus"?
"act" is the more common of the two: it sits at frequency rank #10,437 in our French list, against #29,622 for "actus". 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 "act" and "actus" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "act" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "actus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #243,369 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "act" and "actus" also get mixed up with nearby pairs, the highest-scored neighbour is "actus vs Artis". 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 #243,369 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