Latin word alter comes from Proto-Indo-European *h₂el-, and later Proto-Indo-European *h₂élteros (Other (of two), second.)

Detailed word origin of alter

Dictionary entry	Language	Definition
*h₂el-	Proto-Indo-European (ine-pro)	to raise, feed, nourish, beyond, to grow
*h₂élteros	Proto-Indo-European (ine-pro)	Other (of two), second.
alter	Latin (lat)	The one...the other (alter...alter). The other, the second.

Words with the same origin as alter