aux
/ˈɔks/
"aux" is a 3-letter English headword indexed on PlainSpell.
The verdict
“aux” sits in 20 confusable pairs (corpus #16,176) as an adjective. The look-alike neighbours are the real trap.
- #16,176
- frequency rank, English
- 3,931
- “A” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abbreviation of auxiliary.
Corpus desk
Index EN-aux · aux · English
aux · rank #16,176 · 0 variants · 20 confusables
- FREQ-MID #16,176
- LEN-MID 3 letters
- VOW-2 2 vowels
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 3,931
- PHOTO-FINISH ASA
Nearest frequency peer: ASA (-1 rank slots)
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.
Frequency neighbours of confusable “aux”
Peers at similar corpus weight, separate from look-alike pairs below
- aiding
aiding
83,828 corpus weight
- artificially
artificially
83,827 corpus weight
- ASA
ASA
83,826 corpus weight
- aux
aux
83,825 corpus weight
- barring
barring
83,824 corpus weight
- bead
bead
83,823 corpus weight
What this shows Bars place “aux” against nearest ranked English headwords, not a reprint of the confusable-pair desk.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | aux |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˈɔks/ |
| Letters | 3 |
| Frequency rank | #16,176 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “aux”
Easy to mix with look-alikes
The spelling risk for aux is neighbouring look-alikes ("aw", "AZ", …), not just typos; it is anadjective pronounced /ˈɔks/. Frequency #16,176 among 3,931 “A” headwords. Gloss: "Abbreviation of auxiliary.".
aux has no tracked misspelling variants, a straightforward case of a spelling with little room for common typos. It also participates in 20 confusable-pair relationships, "aw", "AZ", "av", and more, where similar look or sound leads writers to substitute one word for another in context.
No documented word history exists for this headword, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is aux, spelled A-U-X.
Definition
- 1Abbreviation of auxiliary.
Recorded use
Wiktionary exampleThese source excerpts show how aux appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Each aux out is connected to an effects unit and the signal is then returned into the desk.
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "aux", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).