英和和英

From Proto-Indo-European *h₃ rew- (“to shout, to roar”). Cognates include Latin rūmor (“noise”), Latvian rukt (“to shout”), Proto-Slavic *řuti (“to roar”), Sanskrit रव (rava, “roaring, howling”), Avestan 𐬎𐬭𐬎𐬎𐬀𐬙𐬋 (uruuatō, “roaring”), Ancient Greek ὠρύομαι (ōrúomai, “to howl, roar”). This derivation is preferred by De Vaan, due to connecting more cleanly to cognates outside of Italic, as well as yielding a more satisfying explanation for the -a- vowel.
From earlier Proto-Indo-European *Hr̥h₁-wó-, from a root *Hreh₁- (“to shout, sound”); compare Sanskrit राय॑ति (rā́yati, “to bark”) (< Proto-Iranian *HraH-ya-) and Old Norse rámr (“hoarse”) (< Proto-Germanic *rēmaz), though these also have alternative explanations.
Onomatopoeic.

rāvis f sg (genitive rāvis); third declension

Third-declension noun (pure i-stem), singular only.

rāvīs

^ Walde, Alois; Hofmann, Johann Baptist (1954), “ravus”, in Lateinisches etymologisches Wörterbuch (in German), 3rd edition, volume 2, Heidelberg: Carl Winter, page 421
^ De Vaan, Michiel (2008), “ravus (> Derivatives > ravis)”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, page 515
^ Schrijver, Peter C. H. (1991), The reflexes of the Proto-Indo-European laryngeals in Latin (Leiden studies in Indo-European; 2), Amsterdam, Atlanta: Rodopi, →ISBN, pages 275–276
^ Kroonen, Guus (2013), “*rēma-”, in Etymological Dictionary of Proto-Germanic (Leiden Indo-European Etymological Dictionary Series; 11)‎, Leiden, Boston: Brill, →ISBN, page 409

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