Impediment rhymes with:
sediment, adamant, condiment, sediment, adamant, argument, armament, complement, condiment, detriment, diamant, disarmament, element, excrement, experiment, filament, implement, increment, instrument, integument, ligament, ornament, orpiment, parliament, predicament, rearmament, regiment, sacrament, sediment, sentiment, supplement, temperament, tenement, testament, tournament, vehement
Impediment sounds like:
impatient, impotent, infotainment, inhabitant, inpatient