Here's what rhymes with passeriform.
form farm harm forme reform warm charm inform storm norm swarm disarm dorm rewarm perform alarm forearm deform firearm preform rearm vermiform overarm uniform conform lukewarm fusiform nonfarm cruciform yardarm transform chloroform multiform outperform underarm schoolmarm misinform cuneiform thunderstorm nonuniform Words that almost rhyme with passeriform
horn psalm thorn shorn born corn borne torn worn barn warn scorn sworn yarn morn mourn darn porn tarn lorn adorn forlorn reborn forborne lowborn unborn firstborn outworn unicorn forewarn forsworn lovelorn unworn foresworn stillborn careworn timeworn sweetcorn waterborne peppercorn homme vom som com calm bomb palm mom bom balm nom rom tom dom mam suam pom iamb quam prom embalm qualm salaam becalm aplomb consomme firebomb intercom cardamom pogrom supermom