Quenya 

Ender

bridegroom

Ender noun "bridegroom", surname of Tulkas (NDER, TULUK, VT45:11). The form Enderō(VT45:11) is defined as "[?virile] young bridegroom"; Tolkien's gloss was not entirely legible. But this would seem to be an archaic form, because of the long final -ō (later Quenya *Endero).