Sludge rhymes with:
adjudge, begrudge, budge, drudge, fudge, grudge, judge, misjudge, mudge, nudge, prejudge, rudge, smudge, trudge
Sludge sounds like:
salads, salts, saltz, salutes, scalds, schiltz, schlitz, scholtes, scholtz, schultes, schultheis, schultheiss, schultz, schultze, scolds, sellouts, seltz, selwitz, sheilds, shield's, shields, shilts, sholtis, shoults, shoultz, shultis, shults, shultz, shultz's, silhouettes, siltec, skylites, sladek, sladky, slates, slats, sledge, sleds, sledz, sleuths, slides, slits, slots, sludgy, slutsky, slutz, slutzky, socialites, solids, solitec, soltes, soltesz, soltis, soltys, soltysiak