Corroborated rhymes with:
deliberated, liberated, reverberated, accelerated, adulterated, ameliorated, aspirated, cogenerated, commemorated, decelerated, degenerated, deliberated, deteriorated, enumerated, eviscerated, exasperated, exhilarated, exonerated, federated, inaugurated, incarcerated, incinerated, invigorated, liberated, moderated, obliterated, proliferated, redecorated, refrigerated, regenerated, reinvigorated, reiterated, reverberated, unadulterated, unenumerated, unincorporated, unsaturated, venerated
Corroborated sounds like:
carburete, carbureted, carport, carryforward, checkerboard, corporate, corporatewide, corroborate, crawford, crofford