effectifvseffectiveWhat's the difference?

Which to use

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

#4,327
“effectif” frequency rank
#9,990
“effective” frequency rank
14317
confusion score

Side-by-Side Comparison

Feature effectif effective
Definition Qui produit un effet réel. Féminin singulier de effectif.

Where the eye mixes effectif and effective

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

8 ch
effectif
9 ch
effective

Look-alike desk: effectif vs effective

A purely visual mix-up. effectif (\e.fɛk.tif\) and effective (\e.fɛk.tiv\) 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 1 letter(s) in length. Our composite confusion score for this pair is 14317, derived from the frequency rank of both members and their visual similarity.

effectif is recorded at frequency rank #4,327, classified as anadj, pronounced \e.fɛk.tif\. effective is at rank #9,990, tagged as anadj, pronounced \e.fɛk.tiv\.

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 14317, this pair ranks #397,221 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of effectif vs effective

Shared letters: cefit. Private to "effectif": -. Private to "effective": v.

"effectif" · 8 letters · shape VCCVCCVC  ·  "effective" · 9 letters · shape VCCVCCVCV

Known mistypes of this pair

  • effectifefectif · efefctif · effcetif · effecctif · effecitf · effectfi · effectiff · effecttif
  • effectiveefective · efefctive · effcetive · effecctive · effecitve · effectiev · effectivve · effecttive

Frequently Asked Questions

Is swapping "effectif" for "effective" ever safe?
No. They are said differently (\e.fɛk.tif\ versus \e.fɛk.tiv\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "effectif" vs "effective" - which ranks higher?
"effectif" is the more common of the two: it sits at frequency rank #4,327 in our French list, against #9,990 for "effective". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "effectif" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "effective" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #397,221 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "effectif" and "effective" also get mixed up with nearby pairs, the highest-scored neighbour is "effective vs élective". 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 #397,221 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