acidvsagirWhat's the difference?

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

Which to use

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

#43,247
“acid” frequency rank
#1,760
“agir” frequency rank
45007
confusion score

Side-by-Side Comparison

Feature acid agir
Definition Acide, aigre, sur, aigri, revêche, hargneux. Faire quelque chose.

Where the eye mixes acid and agir

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

4 ch
acid
4 ch
agir

Look-alike desk: acid vs agir

These two trip readers on the page rather than in the ear: acid is \a.ˈʦid\ while agir is \a.ʒiʁ\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 45007, derived from the frequency rank of both members and their visual similarity.

acid is recorded at frequency rank #43,247, classified as anadj, pronounced \a.ˈʦid\. agir is at rank #1,760, tagged as averb, pronounced \a.ʒiʁ\.

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 45007, this pair ranks #206,121 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of acid vs agir

Shared letters: ai. Private to "acid": cd. Private to "agir": gr.

"acid" · 4 letters · shape VCVC  ·  "agir" · 4 letters · shape VCVC

Known mistypes of this pair

  • acidaccid · acdi · acidd · aicd · caid
  • agiraggir · agirr · aigr · gair

Frequently Asked Questions

Do "acid" and "agir" mean the same thing in a sentence?
No - they are not even the same part of speech. "acid" is an adjective and "agir" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "acid" vs "agir" - which ranks higher?
"agir" is the more common of the two: it sits at frequency rank #1,760 in our French list, against #43,247 for "acid". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "acid" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "agir" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #206,121 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "acid" and "agir" also get mixed up with nearby pairs, the highest-scored neighbour is "ACF vs acid". 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 #206,121 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