side effect

\ˈsaɪd ɪ.ˌfɛkt\

/\ˈsaɪd ɪ.ˌfɛkt\/ noun

The verdict

“side effect” is uncommon French (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency French
11
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Effet secondaire, effet de bord.

Corpus desk

Index FR-side-effect · side effect · French

side effect · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "S" thin
  • PHOTO-UNK Peer pending

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for side effect
PropertyValue
Headwordside effect
LanguageFrench
Part of speechNoun
IPA\ˈsaɪd ɪ.ˌfɛkt\
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « side effect » en français

side effectreste hors des 100.000 mots français les plus fréquents, dans la longue queue du vocabulaire technique, archaïque ou rare, là où le doute d'orthographe frappe.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

side effect is uncommon French outside the top frequency list, classed as anoun, transcribed \ˈsaɪd ɪ.ˌfɛkt\. Rarity is why readers land here mid-draft. Gloss: "Effet secondaire, effet de bord.".

We couldn't generate a plausible misspelling set for side effect, since its letter sequence doesn't invite the usual edit-distance slips. Our dataset records no confusable match here, a sign it's visually distinctive enough not to be mixed up with another word.

This headword's origin isn't recorded in our source data, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct French form is side effect, spelled S-I-D-E- -E-F-F-E-C-T.

Definition

  1. 1
    Effet secondaire, effet de bord.

Recorded use

Wiktionary examples

These source excerpts show how side effect appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. The contrast-blue is not a colot that has any objective existence—it is only produced upon the retina as a side effect of yellow ; it cannot therefore be moved about by a calc-spar prism.
  2. Another side-effect is the creation of slums by those very sectors of the population which were most willing to accept change—the people who dared make the trek from the village or desert.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "side effect"?
"side effect" is spelled S-I-D-E- -E-F-F-E-C-T. The IPA pronunciation is \ˈsaɪd ɪ.ˌfɛkt\.
What does "side effect" mean?
As a noun, "side effect" means: Effet secondaire, effet de bord.
How do you pronounce "side effect"?
The IPA (International Phonetic Alphabet) transcription for "side effect" is \ˈsaɪd ɪ.ˌfɛkt\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "side effect" come from?
"side effect" is a French word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list