Grober rhymes with:
kroeber, rober, roeber, strober, dober, gober, kober, kroeber, lober, locke-ober, loeber, ober, oct, october, rober, roeber, schober, shober, sober, stober, stoeber, strober, tobar, tober
Grober sounds like:
garber, garver, geographer, gerber, grabber, graber, graeber, graper, graver, greber, greever, grever, griever, groover, gropper, grouper, groupware, grover, gruber, gruver