Disgruntling rhymes with:
dismantling, battling, belittling, bertling, bottling, breitling, chortling, dismantling, entitling, hotaling, houghtaling, mottling, scuttling, settling, shuttling, throttling, totaling, totalling, unsettling, watling
dismantling, battling, belittling, bertling, bottling, breitling, chortling, dismantling, entitling, hotaling, houghtaling, mottling, scuttling, settling, shuttling, throttling, totaling, totalling, unsettling, watling