In Oromo culture, Waaq or Waaqo denotes the single god of the early monotheistic faith believed to have been adhered to by Cushitic groups. This belief system still somewhat exists in some Oromo societies.
With regard to the Muslim Somalis, since no indigenous spiritual group has survived, no ancient deities and spirits are known. Early beliefs can therefore only be hypothesized from certain customs and words, such as waaq (sky-god), an archaic Somali term for god. Also In Somalia there are many clans and places called Waaq like Ceel Waaq which mean the Well of God , Caabud Waaq means where God worshipped. Some Somali clans still have Waaq names like Jid Waaq clan. Also there many Somali language use Waaq names like BarWaaqo which means when the land is filled with grass and water.