Ecad rhymes with:
zycad, amistad, amstrad, armstrad, autorad, branstad, caridad, compuadd, comrade, doodad, dyad, ekblad, ershad, galahad, grandad, halmstad, hyderabad, ironclad, kaliningrad, keypad, kjenstad, kvistad, leningrad, magistad, messagepad, mirsad, mongstad, nomad, novogrod, olympiad, semiclad, sinbad, soledad, stalingrad, thinkpad, triad, trinidad, unctad, undergrad, visegrad, volgograd, zycad
Ecad sounds like:
eased, easiest, east, eastwood, echoed, egged, egghead, eichstadt, eichstaedt, eight, eighth, eightieth, eighty, eischeid, eject, ejected, eked, equate, equated, equity, escada, eschete, eschewed, escoto, escott, escudo, esqueda, essayist, est, esta, estai, estate, estatehood, este, estedat, estee, estey, esty, exact, exacted, exactitude, exceed, exceeded, excised, excite, excited, excused, execute, executed, exhaust, exhausted, exide, exist, existed, exit, exited, exocet, exquisite, exude, exuded, eyeshade, eyesight