Postdate rhymes with:
date, predate, sedate, update, a42128, abate, ate, await, aydt, bait, bate, beit, belate, berate, cate, chait, circumnavigate, coate, collate, commutate, conflate, conjugate, crate, create, date, debate, deflate, demodulate, desecrate, dictate, dilate, disinflate, eight, elate, equate, est, estate, fait, fate, feight, fete, frate, freight, gait, gate, grate, great, haight, hait, hate, inflate, innate, interrelate, interstate, intrastate, irate, iwate, kate, kuwait, late, leight, lightweight, m-8, mate, mccreight, mcfate, misstate, multistate, nate, negate, oblate, ornate, overate, overrate, overweight, pait, pate, plait, plate, predate, procreate, prorate, rait, raitt, rate, recriminate, reflate, reinstate, relate, remunerate, restate, sate, sedate, silverplate, skate, slate, solid-state, spate, speight, stagflate, state, straight, strait, strate, streight, sumgait, tait, taite, taitt, tate, telerate, trait, translate, tri-state, underrate, update, upstate, wait, waite, waitt, wayt, weight, whate
Postdate sounds like:
pabst, paced, packaged, packed, packet, packett, packwood, pact, pacto, paged, paget, pagett, pagette, pagoda, paquet, paquette, pascutto, passat, passed, past, pasta, paste, pasted, paucity, paused, pazuto, peaked, pecht, pecot, peeked, pegged, peixoto, pepcid, peseta, pest, pesta, peugeot, pfost, phagocyte, phased, phaseout, physicist, piaget, pichette, picht, picked, picket, picketed, pickett, picotte, pictet, pieced, piechota, piggott, pigott, pigsty, piqued, piquette, piscataway, pisciotta, pissed, pizatti, pizzuti, pizzuto, poached, pobst, pocked, pocket, pocketed, poised, poked, pokeweed, poquette, posada, posed, posit, posited, possessed, post, postdated, posted, postit, poust, pseudo, psyched, puckett, puget, puget-1, pushed, pussycat