Corroborates rhymes with:
deliberates, elaborates, reverberates, accelerates, adulterates, aspirates, commemorates, cooperates, deliberates, deteriorates, elaborates, enumerates, evaporates, exaggerates, exonerates, generates, incarcerates, incorporates, obliterates, operates, perforates, proliferates, recuperates, reverberates, separates, tolerates, venerates
Corroborates sounds like:
carports, carryforwards, checkerboards, corbridge, corporates, corporatewatch, crawford's