async
"async" is a 5-letter English headword indexed on PlainSpell.
The verdict
“async” is an uncommon English word, ranked #70,466 in English word frequency and used as an adjective.
- #70,466
- frequency rank, English
- 5
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Abbreviation of asynchronous.
| Property | Value |
|---|---|
| Headword | async |
| Language | English |
| Part of speech | Adjective |
| Letters | 5 |
| Frequency rank | #70,466 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “async” sits in English frequency
Spelling & Dictionary Insight
The English entry for async is 5 letters long, classified as an adjective. Corpus data places it at rank #70,466 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "Abbreviation of asynchronous.".
No misspelling variants are generated for async in our index, which points to an orthography that plays by predictable English rules. Our dataset records no confusable match here, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
This entry carries no recorded etymology, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is async, spelled A-S-Y-N-C.
Definition
- 1Abbreviation of asynchronous.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “async”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-S-Y-N-C - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.