Guardian's rhymes with:
guardians, guardians, accordions, guardians, accordions, arcadians, burgundians, cambodians, canadian's, canadians, canadians', comedian's, comedians, custodians, davidian's, davidians, didion's, floridians, guardians, indian's, indians, indians', meridian's
Guardian's sounds like:
garden's, gardenias, gardening, gardens, gardini's, gerding, girding, gordon's, gradations, grading, graduating, graduations, grating, greatness, greeting, greetings, gretna's, gritting, grouting, guardians, guarding, gyrating, gyrations, gyrodynes