Ido lernar

← Old English leornian (derived)

← German lernen (derived)

← English learn (derived)

← Middle English lernen (derived)

← Esperanto lerni (derived)

← Proto-West Germanic *liʀnōn (derived)

← Old High German lernēn (derived)

→ Ido lernolibro (compound)

→ Ido lerneyo (suffix)