Fallow rhymes with:
aloe, afterglow, airglow, aloe, angelo, barkalow, barklow, barlow, barlowe, barrilleaux, bigelow, bordello, brownlow, buffalo, bungalow, carlow, cashflow, costlow, denslow, farlow, fishlow, fontainebleau, furlow, goodloe, goodlow, hollo, inflow, kilo, kinslow, ludlow, marlowe, michelangelo, nicklow, outflow, overflow, parlow, parslow, partlow, peglow, peplow, piccolo, ramlow, rushlow, solo, tarlow, titlow, tupelo, wadlow, wardlow, whitlow, willow
Fallow sounds like:
faal, fabel, fabela, fable, fahl, faiella, fail, faile, failla, faiola, faley, fall, falla, fallaw, falwell, faubel, fauble, faul, faull, faupel, favale, favela, fawley, feeble, feebly, feel, feeley, feely, fehl, feil, fel, fela, fell, fella, fellow, feola, fewell, fiala, fibula, fiel, fil, fila, file, filial, fill, filla, filley, filly, filo, filyaw, fiola, fipple, flail, flaw, flay, flea, flee, flew, flo, floe, flow, flowe, floy, flu, flue, fly, flye, flyway, flywheel, foal, foale, fobel, foell, fohl, foible, foil, foley, folha, folley, follow, followell, folly, folwell, fool, foul, fowble, fowl, fowle, foyle, fuel, full, fully