From Proto-Indo-Iranian *bʰagás, from Proto-Indo-European *bʰeh₂g-; see there for more. Cognate with Sanskrit भग (bhága, “dispenser, gracious lord, patron”).
*bagáh (/bagah/)
- god
- Avestan: 𐬠𐬀𐬖𐬀 (baγa), 𐬠𐬀𐬔𐬀 (baga, “share, (favourable) lot”)
- Sogdo-Bactrian:
- Bactrian: βαγο (bago /baγ/)
- Khwarezmian: اڤغیک (ʾβγyk /*aβγīk/, “(lit) little idol, doll, puppet”) (> *bagakáh)
- Sogdian: (/βaγ/)
- Sogdian script: [script needed] (βγ)
- Manichaean script: 𐫂𐫄 (βɣ), 𐫁𐫄 (bɣ)
- Syriac script: ܒܓ (bg), ܒܮ (bγ)
- → Classical Persian: ڤغ (vγ /βaγ/), فغ (faγ)
- Parthian: (/bag(early) ~ baγ (late)/)
- Inscriptional Parthian script: 𐭀𐭋𐭇 (ALḤ)
- Manichaean script: 𐫁𐫃 (bg), 𐫁𐫄 (bɣ)
- → Old Armenian: բագ (bag, “god; portion”)
- → Classical Persian: بغ (baγ, “idol; lord”)
- Old Persian: 𐎲𐎥 (b-g /baga/, “god”)
- Middle Persian: (/bag (early) ~ bay (late)/, “lord, (earthly) god; divine”)
- Book Pahlavi script: [Book Pahlavi needed] (ORHYA), [Book Pahlavi needed] (bk'), [Book Pahlavi needed] (bg)
- Manichaean script: 𐫁𐫏 (by)
- Inscriptional Pahlavi script: 𐭡𐭢𐭩 (bgy), 𐭥𐭥𐭧𐭩𐭠 (ORḤYA)
- → Ancient Greek: Βέοι (Béoi)
- → Proto-Turkic: *beg (likely)
- → Proto-Slavic: *bãnъ (see there for further descendants)