ralentivsralentirWhat's the difference?

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

Which to use

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

#11,115
“ralenti” frequency rank
#9,230
“ralentir” frequency rank
20345
confusion score

Side-by-Side Comparison

Feature ralenti ralentir
Definition Qui est devenu plus lent. Diminuer la vitesse.

Where the eye mixes ralenti and ralentir

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.

7 ch
ralenti
8 ch
ralentir

Visual trap between ralenti and ralentir

These two trip readers on the page rather than in the ear: ralenti is \ʁa.lɑ̃.ti\ while ralentir is \ʁa.lɑ̃.tiʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “ralenti” sits inside “ralentir”, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 20345, derived from the frequency rank of both members and their visual similarity.

ralenti is recorded at frequency rank #11,115, classified as anadj, pronounced \ʁa.lɑ̃.ti\. ralentir is at rank #9,230, tagged as averb, pronounced \ʁa.lɑ̃.tiʁ\.

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 20345, this pair ranks #368,747 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ralenti vs ralentir

Shared letters: aeilnrt. Private to "ralenti": -. Private to "ralentir": -.

"ralenti" · 7 letters · shape CVCVCCV  ·  "ralentir" · 8 letters · shape CVCVCCVC

Known mistypes of this pair

  • ralentiarlenti · raelnti · ralenit · ralennti · ralentti · raletni · rallenti · ralneti
  • ralentirarlentir · raelntir · ralenitr · ralenntir · ralentirr · ralentri · ralenttir · raletnir

Frequently Asked Questions

Can "ralenti" and "ralentir" be used interchangeably?
No - they are not even the same part of speech. "ralenti" is an adjective and "ralentir" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ralenti" or "ralentir"?
"ralentir" is the more common of the two: it sits at frequency rank #9,230 in our French list, against #11,115 for "ralenti". 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 "ralenti" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ralentir" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #368,747 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ralenti" and "ralentir" also get mixed up with nearby pairs, the highest-scored neighbour is "ralenti vs retenti". 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 #368,747 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