Plunging rhymes with:
lunging, lunging, arranging, avenging, challenging, changing, cringing, exchanging, impinging, infringing, lounging, lunging, nanjing, prearranging, ranging, rearranging, scavenging, scrounging, shortchanging, unchanging
Plunging sounds like:
plainsong, planking, plinking, plunking, pulmazyme's