Leviathan rhymes with:
donathan, johnathan, johnathon, jonathan, jonathon, jonothan, lecithin, mcclenathan, trevathan, anthon, blethen, bothun, brethen, cauthen, cauthon, cawthon, donathan, dothan, earthen, elizabethan, ethan, johnathan, johnathon, jonathan, jonathon, jonothan, kathan, lathan, lathon, laythan, lecithin, lengthen, louthan, mathan, mcclenathan, mcglothen, mcglothin, mckeithan, mckeithen, mckethan, midthun, mithun, mothon, nathan, pathan, ramthun, snethen, strengthen, swaminathan, trefethen, trevathan, warthen, wathen, witthuhn, worthen
Leviathan sounds like:
labaton, lefton, leptin, levitan, levitation, leviton, levittown, lifetime, liftin, lifton, lilliputian, lipton, lobotomy, loftin, lofton, lopatin, lupton