The storyProto-Indo-European*h₂édProto-Italic*adProto-Italic*ad-Latinad-Englishad-English todayag-Assimilated form of ad- before g. From Latin ad-.Words from the same rootsLatinad- all →aimachieveassurearrestaffairaccordamortizationaccoladeafforestationassuageadsorbac-accollaccouchementad-an-animadvertappresentationar-as-at-Etymology from Wiktionary, CC BY-SA 4.0.