Aar
/ɑɹ/
"aar" is a 3-letter English headword indexed on PlainSpell.
The verdict
“Aar” is a moderately-common English word, ranked #45,768 in English word frequency and used as a proper noun.
- #45,768
- frequency rank, English
- 3
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A river in Switzerland, flowing 292 km from the glaciers of the Bernese Alps into the Rhine at Koblenz, on the Swiss–German border.
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 | Aar |
| Language | English |
| Part of speech | Proper noun |
| IPA | /ɑɹ/ |
| Letters | 3 |
| Frequency rank | #45,768 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “Aar” sits in English frequency
Spelling & Dictionary Insight
The English entry for Aar is 3 letters long, classified as a proper noun, and transcribed in the International Phonetic Alphabet as /ɑɹ/. Corpus data places it at rank #45,768 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
No generated misspelling entries exist for Aar in our index, a sign its spelling follows regular English conventions. It also participates in 20 confusable-pair relationships, "as", "at", "an", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: From German Aare, probably from a Celtic language. The correct English form is Aar, spelled A-A-R.
Definition
- 1A river in Switzerland, flowing 292 km from the glaciers of the Bernese Alps into the Rhine at Koblenz, on the Swiss–German border.
- 2A river in Germany that flows 50 km from the Taunus in Hesse into the Lahn at Diez, Rhineland-Palatinate.
- 3A tributary in Hesse, Germany of the Dill river, itself a tributary of the Lahn.
Etymology
From German Aare, probably from a Celtic language.
This word in other languages
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 “Aar”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-A-R - every other letter order is a misspelling in standard orthography.
- Say it as /ɑɹ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “as” - see the side-by-side comparison. Aar vs as
- 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.