Proto-IE: *sō̆, *som
Meaning: prep./adv.: together
Hittite: { san }
Tokharian: A, B ysamo, ysomo 'altogether, collectively' (Adams 523, 524)
Old Indian: sám- 'together, with'
Avestan: ham- 'mit'
Other Iranian: OPers ham- 'mit'
Old Greek: ha- praef. 'with'; homaló- 'gleich, eben, glat'; hamó- 'irgend ein'; háma, dor. hamā̂ 'in einem, zugleich'; homó- 'gemeinsam; ähnlich, gleich, eben, glatt'; ó-trikhes, usw.
Germanic: *sin 'zusammen': OSax, OHG sin-hīun, OE sin-hīwan 'conjuges, Ehegatten', Got sin-tīns 'täglich', OSax sin-nahti, OE sin-niht 'ewige Nacht' usw.;
Latin: sim-; similis; simul, OLat semol, semul 'zugleich'; semel
Other Italic: Umbr sumel 'zugleich'
Celtic: OIr sam- 'zusammen'
Russ. meaning: вместе
References: WP II 490
Comments: See Slav *sāmъ s.v. #3005 *sem-
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