Foundation rhymes with:
commendation, fundacion, inundation, recommendation, accommodation, backwardation, commendation, consolidation, degradation, depredation, fluoridation, fundacion, gradation, intimidation, inundation, invalidation, liquidation, oxidation, predation, recommendation, retardation, sedation, trepidation, validation
Foundation sounds like:
fantini, fanton, fenton, finton, fontaine, fontana, fountain, fountaine, funtime