Sped rhymes with:
abed, ahead, bed, behead, biomed, bled, bread, bred, dead, dread, dred, dredd, ed, embed, fed, fled, fread, fred, freda, ged, head, hilton-head, imbed, infrared, instead, interbred, jed, lead, led, med, misled, ned, nedd, numed, overfed, overhead, pled, purebred, read, reade, red, redd, retread, said, sayed, schwed, sffed, shead, shed, shedd, shred, sled, sledd, spread, stead, swed, szwed, ted, thoroughbred, thread, tread, unread, unsaid, unted, unwed, wed, wedd, wehde, widespread, zed
Sped sounds like:
sabat, sabato, sabaudia, sabbath, sabta, safdie, safety, sapped, saputo, saved, savitt, scaffidi, scafidi, scoffed, scooped, scuffed, seabed, seafood, seeped, sepeda, sept, septa, sffed, shabad, shaft, shafted, shaped, shaved, shibata, shift, shifted, shifty, shipped, shopped, shoptaw, shoved, showboat, sift, sifted, sipped, skipped, skipwith, sobbed, sobota, sobotta, sociopath, soffit, soft, softwood, souped, soviet, spada, spade, spady, spaeth, spaid, spat, spate, spath, spayd, spayde, speed, speeded, speedway, speedy, speth, spewed, spied, spieth, spit, spite, spoofed, spot, spoto, spotted, spotty, spout, spouted, spud, subbed, subdue, subdued, svoboda, swapped, swept, swift, swiped, swoboda, swooped