Inundate rhymes with:
mandate, accommodate, backdate, consolidate, dilapidate, elucidate, intimidate, invalidate, liquidate, mandate, mithridate, multicandidate, outdate
Inundate sounds like:
iannotti, iantha, ianthe, imitate, imitated, immanent, immediate, imminent, immunity, imnet, imondi, inanimate, inda, indata, indeed, india, indiaia, indie, indite, indited, indo, indy, inhumanity, initiate, initiated, initio, inmate, inmont, innate, innominate, innuendo, inti, into, intuit, inuit, inundated, inwood, iwamoto