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