Grub rhymes with:
grubb, drub, grubb, rub, scrub, shrub, strub, strubbe, bub, bubb, chubb, club, clubb, cub, drub, dub, grubb, hub, jubb, nub, pub, rub, scrub, shrub, snub, strub, strubbe, stub, stubbe, sub, tub, tubb
Grub sounds like:
garb, garbe, garbo, garibay, gariepy, garp, garvey, garvie, geography, giraffe, gorby, grab, grabau, grabbe, grabe, grabow, graboy, graef, graefe, graeff, graf, grafe, graff, graffeo, grape, graph, grave, gravy, greave, greb, grebe, grefe, greff, greif, greiff, greve, grieb, grief, griep, grieve, griff, griffee, griffey, griffie, griffo, griffy, grip, gripe, gripp, grippi, grippo, grob, grobe, groep, groff, groove, groovy, grope, gropp, groppy, group, groupe, groupie, grove, gruba, grubb, grubby, grube, gruff, grupe, grupo, grupp, gruppo