TY - JOUR N2 - In the first part of this article the author suggests a new etymology for the East Slavic adjective horošiĭ ʻgoodʼ (in Old Russian ʻbeautifulʼ) – from IE *ker(ə)- ʻburn, blazeʼ extended by the determinative -s-: richly attested *kor-s- > Proto Slavonic *xor-x- (> *xoršьjь) with the affective x-, like many other words. As proposed by many scholars, one of the variants of this root is present in Slavonic *krasa ʻbeautyʼ that corresponds to the original meaning of the adjective horošiĭ. The determinative -s- is commonly used for extending the root *ker(ə)-. The second part deals with three proper names in the (Old) Russian mythology and folklore that come, in the author’s opinion, from Iranic languages. The analysis of the early Old Russian written sources (The Ostromir’s Gospel and chronicles) allows to approve that the original form of the theonym Xors was Xorŭsŭ coming from the genitive form of the Iranian word for ‘sun’ in the truncated compound name (most likely, ‘son of the sun’ as a name of the deity of sunrise). The name of the tale bird Mogoveĭ/Magoveĭ corresponds to Avestan (Gath.) magavan-, adj. ‘belonging to the Zoroastrian community’, Old Indic maghá-van(t)- ‘generous; giver (also an epithet of Indra)’, Old Persian magav-, an adjective denoting a Median tribe whose representatives had got the rank of priests, ‘magic, magician’, Pāli maghavā, the name of Sakka. This name corresponds to another fairy bird name recorded on the same territory (in the basin of the Mezen, the region of Archangelsk) ‒ Vostrogot (Vostrogor) that continues Young Avestan a-srāvayaT.gāθā ‘not chanting the Gathas’; i.e., these two mythonyms form an opposition based on the semantic feature ‘initiated ‒ uninitiated (into the Zoroastrian doctrine and ritual)’. L1 - http://journals.pan.pl/Content/116794/PDF/2020-02-SOR-10-Jujukin.pdf L2 - http://journals.pan.pl/Content/116794 PY - 2020 IS - No 2 EP - 351 DO - 10.24425/slo.2020.133665 KW - horošiĭ KW - Russian folklore KW - etymology KW - East Slavic languages KW - Iranic languages A1 - Ююкин, Максим PB - Komitet Słowianoznawstwa PAN VL - vol. LXIX DA - 2020.09.15 T1 - Etymological Studies on East Slavic Vocabulary: 1) Horošiĭ; 2) about the Traces of the Iranian Influence on the Mythological Onomasticon: Xors, Mogoveĭ-bird and Vostrogot SP - 335 UR - http://journals.pan.pl/dlibra/publication/edition/116794 T2 - Slavia Orientalis ER -