Ratatisement rhymes with:
aggrandizement, disenfranchisement, self-aggrandizement, advertisement, advisement, aggrandizement, amazement, amusement, appeasement, disenfranchisement, easement, ozment, self-aggrandizement
aggrandizement, disenfranchisement, self-aggrandizement, advertisement, advisement, aggrandizement, amazement, amusement, appeasement, disenfranchisement, easement, ozment, self-aggrandizement