Guardian rhymes with:
accordion, edwardian, gordian, accordion, akkadian, amerindian, andean, antemeridian, arcadian, burgundian, cambodian, canadian, ceridian, chadian, circadian, claudian, collodion, comedian, custodian, davidian, didion, edwardian, floridian, freudian, garabedian, gedeon, gideon, gordian, indian, macfadyen, madyun, mcfadyen, median, meridian, meridien, mooradian, mouradian, nalbandian, nickelodeon, obsidian, odeon, odiaun, pancanadian, providian
Guardian sounds like:
garden, gardena, gardenia, gardin, gardini, garduno, gardyne, garritano, garten, gartin, gartman, garton, gerdeman, giardina, giardini, giardino, giarratano, giordani, giordano, girardin, girten, girtman, girton, gordan, gordana, gorden, gordian, gordin, gordon, gortney, gorton, gourdine, gradation, graden, gradney, graduation, grattan, gratton, graydon, greetham, gretna, gritton, groden, grodin, groton, grutman, guardin, guardino, guertin, gwartney, gyration, gyrodyne