The 14th king of Arthedain (LotR/1038). The initial element of his name may be aran “king” and its final element might be the nasal mutation phant of pant “full” (as suggested by David Salo, GS/341).
Sindarin
Araphant
noun. full king, king of all
araphant
masculine name. Araphant
Elements
Word Gloss aran “king, lord, chief, (lit.) high or noble person, king, lord, chief, (lit.) high or noble person; [N.] lord (of a specific region)” pant “full, full; [G.] (with article) the whole, all the”
aran (“king”) + pant (“full”) #The assimilation of n+p > ph could be “internal nasal mutation”.