Martyrs rhymes with:
carter's, carters, charter's, charters, garters, nonstarters, quarters', starters, tartars, airporters, carter's, carters, charter's, charters, courter's, exporters, exporters', garters, headquarters, hindquarters, importers, importers', mortars, nonstarters, porter's, porters, quarter's, quarters, quarters', quarters's, reporter's, reporters, reporters', shorter's, snorters, sorters, starters, supporters, tartars, transporters
Martyrs sounds like:
marauders, meritorious, mortars, murderer's, murderers, murderous, murders