onset

\ˈɒn.ˌsɛt\

/\ˈɒn.ˌsɛt\/ noun

The verdict

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

Unranked
below top-frequency French
5
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Commencement, début, inauguration.

Corpus desk

Index FR-onset · onset · French

onset · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MID 5 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "O" 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 onset
PropertyValue
Headwordonset
LanguageFrench
Part of speechNoun
IPA\ˈɒn.ˌsɛt\
Letters5
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « onset » en français

onsetn'entre pas dans le top 100.000 du français: zone de termes techniques, archaïques ou rares.

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

Rare enough to double-check

onset is uncommon French outside the top frequency list, classed as anoun, transcribed \ˈɒn.ˌsɛt\. Rarity is why readers land here mid-draft. Gloss: "Commencement, début, inauguration.".

The misspelling generator found no plausible variants for onset, which points to an orthography that plays by predictable French rules. Our confusable-pair dataset has no match for it, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Our source data has no etymology on file for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct French form is onset, spelled O-N-S-E-T.

Definition

  1. 1
    Commencement, début, inauguration.

Recorded use

Wiktionary example

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

  1. Finally, from the onset of the insurrection, the Polish forces were aided by the civilian population and had surprise on their side as they attacked many separate groups of soldiers at the same time and the resistance to Russian forces quickly spread over the city.

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 "onset"?
"onset" is spelled O-N-S-E-T. The IPA pronunciation is \ˈɒn.ˌsɛt\.
What does "onset" mean?
As a noun, "onset" means: Commencement, début, inauguration.
How do you pronounce "onset"?
The IPA (International Phonetic Alphabet) transcription for "onset" is \ˈɒn.ˌsɛt\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "onset" come from?
"onset" is a French word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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