Sediment rhymes with:
impediment, adamant, condiment, impediment, adamant, argument, armament, complement, condiment, detriment, diamant, disarmament, element, excrement, experiment, filament, impediment, implement, increment, instrument, integument, ligament, ornament, orpiment, parliament, predicament, rearmament, regiment, sacrament, sentiment, supplement, temperament, tenement, testament, tournament, vehement
Sediment sounds like:
saddened, sectioned, sixteenth, stained, stamand, stamant, stamaty, stand, standa, standout, stant, stanwood, statement, stationed, steamed, stemmed, stennett, stent, stinnett, stinnette, stint, stomata, stoned, student, stunned, stunt, stunted, stymied, sustained, sweetened, systemat, systemwide