Serial rhymes with:
cereal, antibacterial, arterial, bacterial, biomaterial, cereal, ethereal, immaterial, imperial, managerial, material, venereal
Serial sounds like:
sara-lee, sarli, sarlo, scarola, scharlau, schierl, schroll, scrawl, scroll, searl, searle, securely, serle, serlo, sharell, sharla, sharlow, sharyl, sherley, sherrell, sherrill, sheryl, shirell, shirelle, shirl, shirlee, shirley, shirlie, shirrell, showgirl, shrill, shurley, sorel, sorell, sorely, sorlie, sorrel, sorrell, sourrouille, squarely, squirrel, surely, surly, surreal, surrell, swirl