When Adûnakhôr succeeded in turn to become Númenor's twentieth ruler, he took this rejection of the Elvish tongues to an extreme degree. Not only did he publicly take a name in his native tongue - Ar-Adûnakhôr, 'Lord of the West' - but he even went so far as to ban the use of Elvish languages from use in his kingdom1. It was thus during his reign that the Elves no longer travelled openly to the land of Númenor, but came only secretly to its western shores, where still many of the Faithful were friendly to them.
Ar-Adûnakhôr ruled Númenor for sixty-three years, and was succeeded by his son, who ruled as Ar-Zimrathôn.
The loremasters were reluctant to give up ancient tradition so easily, and despite Ar-Adûnakhôr's ban, they inscribed his name in Elvish in the Scroll of Kings: Tar-Hernúmen. It's unclear whether Adûnakhôr himself approved of this action, or was even aware of it.