imprécisevsimproviseTell them apart

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

Which to use

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

#43,986
“imprécise” frequency rank
#25,360
“improvise” frequency rank
69346
confusion score

Side-by-Side Comparison

Feature imprécise improvise
Definition Féminin singulier de imprécis. Première personne du singulier du présent de l’indicatif de improviser.

Where the eye mixes imprécise and improvise

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

9 ch
imprécise
9 ch
improvise

Why the eye confuses imprécise with improvise

These two trip readers on the page rather than in the ear: imprécise is \ɛ̃.pʁe.siz\ while improvise is \ɛ̃.pʁɔ.viz\. 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 69346, derived from the frequency rank of both members and their visual similarity.

imprécise is recorded at frequency rank #43,986, classified as anadj, pronounced \ɛ̃.pʁe.siz\. improvise is at rank #25,360, tagged as averb, pronounced \ɛ̃.pʁɔ.viz\.

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 69346, this pair ranks #55,498 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of imprécise vs improvise

Shared letters: eimprs. Private to "imprécise": . Private to "improvise": ov.

"imprécise" · 9 letters · shape VCCCVCVCV  ·  "improvise" · 9 letters · shape VCCCVCVCV

Known mistypes of this pair

  • improviseimmprovise · imporvise · impprovise · improivse · improvies · improvisse · improvsie · improvvise

Frequently Asked Questions

Do "imprécise" and "improvise" mean the same thing in a sentence?
No - they are not even the same part of speech. "imprécise" is an adjective and "improvise" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "imprécise" or "improvise" show up more?
"improvise" is the more common of the two: it sits at frequency rank #25,360 in our French list, against #43,986 for "imprécise". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "imprécise" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "improvise" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #55,498 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "imprécise" and "improvise" also get mixed up with nearby pairs, the highest-scored neighbour is "imprécis vs imprécise". 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 #55,498 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