köken: From Middle Persian [script needed] (SLYA) / [script needed] (wt' /wad/, “bad, evil”), from Proto-Iranian *watah, with further origin uncertain. Akin to Old Armenian վատ (vat), an Iranian borrowing. Unrelated to English bad, despite phonetic and semantic similarity.
köken: Etymology tree Proto-Indo-European *-eh₂-k-s Proto-Italic *-āks Latin -āx Proto-Indo-European *-yósder. Proto-Indo-European *-éyos Proto-Italic *-ejos Proto-Italic *-eos Latin -eus Latin -āceus Latin -aceum Italian -accioder. Esperanto -aĉ- Esperanto aĉa From -aĉ-, a suffix denoting inferiority.