Headquarters rhymes with:
hindquarters, hindquarters, hindquarters, airporters, hindquarters, airporters, carter's, carters, charter's, charters, courter's, exporters, exporters', garters, hindquarters, importers, importers', martyrs, mortars, nonstarters, porter's, porters, quarter's, quarters, quarters', quarters's, reporter's, reporters, reporters', shorter's, snorters, sorters, starters, supporters, tartars, transporters