Early 18th cent. borrowing from Latin basis 'id.' It replaced the older word basa, now restricted to architecture. Borrowed from Ancient Greek βάσις (básis) "base," but also "step."
From Proto-Indo-European *gwh2-ti̯- "gone." From a root *gweh/2- "to go." See also venir.
Latin venire "to come"
Gothic qiman "to come," Old Norse kuma 'id.,' Old Saxon kuman 'id.,' Old High German cuman 'id.,' Old English cuman (English come)
Sanskrit gáti "going," Young Avestan jasaiti "to move"