Onscreen rhymes with:
sunscreen, screen, sunscreen, crean, screen, sunscreen, andreen, brean, breen, citrine, crean, doreen, dufrene, frean, freen, green, greene, ireene, irene, latrine, laureen, laurene, lorene, marean, maureen, mcbreen, moreen, pilgreen, preen, prien, reen, screen, spreen, sunscreen, tigrean, treen, varin, vidrine