Eckardt's rhymes with:
eckert's, eckert's, folkerts, harcourt's, albert's, alberts, comforts, concerts, converts, deserts, eberts, eckert's, effertz, efforts, egberts, evarts, everts, expert's, experts, experts', filbert's, filberts, folkerts, frankfort's, frankfurt's, gaubert's, gewirtz, gilbert's, gizbert's, harberts, harcourt's, herbert's, hubert's, hulbert's, lambert's, lefferts, leubert, liverworts, mcroberts, megahertz, perverts, rewerts, robert's, roberts, roberts', schubert's, siefert's, stalwarts, stewart's, stuart's, stuarts, taggart's
Eckardt's sounds like:
eckert's, escorts, eskridge, exaggerates, exerts, exhorts