agirvsAPIWhich spelling fits?

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

Which to use

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

#1,760
“agir” frequency rank
#18,115
“API” frequency rank
19875
confusion score

Side-by-Side Comparison

Feature agir API
Definition Faire quelque chose. Alphabet phonétique international.

Where the eye mixes agir and API

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

4 ch
agir
3 ch
API

Why the eye confuses agir with API

These two trip readers on the page rather than in the ear: agir is \a.ʒiʁ\ while API is \a.pi\. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 19875, derived from the frequency rank of both members and their visual similarity.

agir is recorded at frequency rank #1,760, classified as averb, pronounced \a.ʒiʁ\. API is at rank #18,115, tagged as anoun, pronounced \a.pi\.

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 19875, this pair ranks #371,099 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of agir vs API

Shared letters: ai. Private to "agir": gr. Private to "API": p.

"agir" · 4 letters · shape VCVC  ·  "API" · 3 letters · shape VCV

Known mistypes of this pair

  • agiraggir · agirr · aigr · gair

Frequently Asked Questions

Is swapping "agir" for "API" ever safe?
No - they are not even the same part of speech. "agir" is a verb and "API" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "agir" or "API"?
"agir" is the more common of the two: it sits at frequency rank #1,760 in our French list, against #18,115 for "API". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Eye-level mix-up between "agir" and "API" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "agir" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "API" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #371,099 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "agir" and "API" also get mixed up with nearby pairs, the highest-scored neighbour is "API vs aur". 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 #371,099 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