nonsynchronous

adj

"nonsynchronous" is a 14-letter English headword indexed on PlainSpell.

The verdict

“nonsynchronous” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
14
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not synchronous

Corpus desk

Index EN-nonsynchronous · nonsynchronous · English

nonsynchronous · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 14 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "N" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

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 nonsynchronous
PropertyValue
Headwordnonsynchronous
LanguageEnglish
Part of speechAdjective
Letters14
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “nonsynchronous” in English

nonsynchronousfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

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

Rare enough to double-check

nonsynchronous is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Not synchronous".

nonsynchronous doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. Our confusable-pair dataset has no match for it, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From non- + synchronous. The correct English form is nonsynchronous, spelled N-O-N-S-Y-N-C-H-R-O-N-O-U-S.

Definition

  1. 1
    Not synchronous

Recorded use

Wiktionary examples

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

  1. Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich The cyclopropanation is believed to be nonsynchronous with the alkene approaching preferentially on the side of the EWG.
  2. In a classic study imprisoned muggers were asked to rate the muggability of people by simply watching them walk down the street. The study concluded that the most attractive targets were people whose gait was perceived as "nonsynchronous".

Etymology

From non- + synchronous.

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 "nonsynchronous"?
"nonsynchronous" is spelled N-O-N-S-Y-N-C-H-R-O-N-O-U-S.
What does "nonsynchronous" mean?
As an adjective, "nonsynchronous" means: Not synchronous
What is the origin of the word "nonsynchronous"?
From non- + synchronous. See the full etymology section above for more details.
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