Where does “alter” come from?

Alter comes from Medieval Latin alterare, derived from Latin alter meaning "other," which traces through Latin al- and ad- back to Proto-Indo-European ád and h₂éd.

alter (English): To change the form or structure of; To become...

Definitions

  1. To change the form or structure of; To become...

Ancestry of “alter”, step by step

alter traces back through two separate lines of ancestry.

via Old French alterer

StepLanguageWordMeaning
1Old Frenchalterer
2Medieval Latinalterareto make other; present active infinitive of...
3Latinalterthe other, the second; the one...the other
4Proto-Indo-Europeanh₂élterosother , second
5Proto-Indo-Europeanh₂el-to grow, nourish; beyond, other; to wander, roam

via English alter ego

StepLanguageWordMeaning
1Englishalter egoSomebody's alternate personality or persona;...
2Latinalter egoother self

Words derived from “alter

Every word from Proto-Indo-European h₂el-