Duncombe rhymes with:
cancom, frankum, tinkham, balcom, balkcom, barcomb, bascom, beacom, beckum, bolcom, branscom, branscomb, branscum, bricom, cancom, capcom, claycomb, corkum, dekom, edgcomb, eurocom, finchum, finnicum, flinchum, forcum, frankum, gidcumb, griscom, halcomb, hanscom, harcum, hickam, hokum, holcomb, holcombe, isoxicam, jochum, kirkum, lacomb, lancome, leikam, lincecum, linscomb, linthicum, lipscomb, liscom, macomb, malcolm, malcom, malcomb, marcom, marcum, markham, markum, mecum, modicum, morcom, moscom, neukam, newcom, newcomb, newcombe, newcome, niccum, nickum, nukem, nycum, orkem, peckham, revercomb, roskam, rubicam, slocomb, slocum, slocumb, slokum, stinchcomb, stocum, talcum, tinkham, titcomb, unwelcome, vanblarcom, vanblaricom, wakeham, welcome, whitcomb, wickham, yoakam, yoakum, yocam, yocom, yocum, yokum