Hillians rhymes with:
billions, brazilians, civilians, jillions, millions, pavilions, reptilians, trillions, zillions, australians, battalions, billions, brazilians, civilians, italians, jillions, medallions, millions, pavilions, rebellion's, rebellions, reptilians, scallions, somalians, stallions, trillions, zillions
Hillians sounds like:
hailing, halling, hallums, halmos, hauling, healing, heeling, heileman's, helen's, helena's, helens, heling, helinski, hellams, hellenic, hellenize, hellenizes, helling, hellums, helmes, helmich, helmick, helmig, helming, helminiak, helminski, helmke, helms, helms', helms's, hilemon's, hilinski, hilling, hilmes, holewinski, holiness, holing, holliman's, holling, hollings, hollins, hollowing, holmes, holmes's, holness, hoolihan's, houlihan's, howling, huling, hulings, hulon's