Comments:Дыбо 15. Ozawa 170 compares the Jpn. form with Mong. arča- 'to quarrel, fight', but the latter is rather a reflex of *ḗŕa q. v. We should note that the Jpn. form may also belong to a different root, PA *erV 'seek, contest' (a possible Mong.-Turk. isogloss, on which see under *ī́re 'reach').