Mortem rhymes with:
antemortem, antemortem, kortum, antemortem, kortum, partum, accustom, ageratum, antemortem, arboretum, argosystem, atom, autumn, bantam, biosystem, bottom, cablesystem, centum, chatham, cheatham, cheatum, chittum, cottam, cottom, custom, datum, dictum, eastham, ecosystem, frantom, haltom, higginbottom, infinitum, item, kortum, lineitem, mentholatum, momentum, ottum, partum, phantom, quantum, rectum, sanctum, sense-datum, statum, stratum, subsystem, symptom, system, tatom, tatum, techsystem, telesystem, totem, ultimatum, ultrasystem, verbatim, victim, wintom
Mortem sounds like:
maradona, maradonna, marathon, marden, mardon, maritime, marten, marteney, marthena, martian, martin, martina, martine, martineau, martini, martino, martiny, martion, marton, martone, martyn, mauritania, meriden, meridian, meridien, merten, merton, mooradian, morden, moreton, morten, morton, mouradian, murden, murton