§ Haradoth >> Haradhoth (WR:365) < N. harad ’south’ (KHYAR-) + hoth ’host, crowd, frequent in people-names as Glamhoth (KHOTH-)
For the loss of h compare Lossoth ’the Snowmen’ (LotR App.A), Loss(h)oth (PE17:39), apparently formed with S. loss ’snow’ (VT42:18); and also earlier Rohiroth, Rochiroth above (1.18).