AAR

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AAR^¹

noun AARs

abbreviation Aircraft accident report.
abbreviation after-action report; after-action review.

proper noun

abbreviation Axis2 ARchive file (extension .aar)
abbreviation Air America Radio
abbreviation All-American Rejects
abbreviation American Academy of Religion
abbreviation Association of American Railroads

phrase

abbreviation At any rate.
abbreviation against all risks.

Aar^²

/ɑɹ/ US
/ɑː(ɹ)/ UK

Rhymes with -ɑː(ɹ)

Where it comes from

From German Aare, probably from a Celtic language.

proper noun Aare

A river in Switzerland, flowing 292 km from the glaciers of the Bernese Alps into the Rhine at Koblenz, on the Swiss–German border.
A river in Germany that flows 50 km from the Taunus in Hesse into the Lahn at Diez, Rhineland-Palatinate.
A tributary in Hesse, Germany of the Dill river, itself a tributary of the Lahn.

Translations

Every language

name river in Switzerland

日本語	アーレ川 āregawa
Français	Aar
Deutsch	Aare
Ελληνικά	Άαρ Áar
Русский	А́ре Áre

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Cite this

MLA

"AAR." Wiktionary, via Micwyn, micwyn.com/word/aar. Accessed 6 Nov. 2026.

APA

AAR. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/aar

Chicago

"AAR." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/aar.

BibTeX

@misc{aar_2026,
  title = {AAR},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/aar},
  urldate = {2026-11-06}
}

AAR