affectvsaffectsWhich spelling fits?

Which to use

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

#37,638
“affect” frequency rank
#48,899
“affects” frequency rank
86537
confusion score

Side-by-Side Comparison

Feature affect affects
Definition Disposition affective élémentaire : humeur, émotion, sentiment, motivation, passion. Pluriel de affect.

Same sound, different letters: affect vs affects

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 6 letters.

6 ch
affect
7 ch
affects

Ear matches; page differs - affect and affects

This is the hard kind. affect and affects are pronounced identically (\a.fɛkt\) and both work as anoun. Neither the ear nor the grammar will rescue you; only the meaning does, so the glosses below are the whole decision. They differ by 1 extra letter(s) - “affect” sits inside “affects”. Our composite confusion score for this pair is 86537, derived from the frequency rank of both members and their visual similarity.

affect is recorded at frequency rank #37,638, classified as anoun, pronounced \a.fɛkt\. affects is at rank #48,899, tagged as anoun, pronounced \a.fɛkt\.

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 86537, this pair ranks #9,568 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of affect vs affects

Shared letters: aceft. Private to "affect": -. Private to "affects": s.

"affect" · 6 letters · shape VCCVCC  ·  "affects" · 7 letters · shape VCCVCCC

Known mistypes of this pair

  • affectafect · afefct · affcet · affecct · affectt · affetc · fafect
  • affectsafects · afefcts · affcets · affeccts · affecst · affectss · affectts · affetcs

Frequently Asked Questions

Can "affect" and "affects" be used interchangeably?
No. They are pronounced the same (\a.fɛkt\), which is exactly why they get swapped in writing, but the dictionary meanings above are different, and pronunciation is no guide here.
Frequency check: "affect" vs "affects" - which ranks higher?
"affect" is the more common of the two: it sits at frequency rank #37,638 in our French list, against #48,899 for "affects". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've separated the homophone pair "affect" / "affects". Follow the links when you need the full entry or a neighbour that trips the same ear.

  • Full dictionary entry for "affect" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "affects" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #9,568 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "affect" and "affects" also get mixed up with nearby pairs, the highest-scored neighbour is "affectifs vs affects". 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 #9,568 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