Subset rhymes with:
amagansett, ansett, asset, avocet, backset, exocet, handset, headset, heavyset, inset, mediaset, mindset, morrisett, onset, outset, somerset, sunset, typeset, videocassette
Subset sounds like:
safest, savaged, savasta, savviest, scapegoat, scapegoated, sebesta, spaced, spacesuit, spaghetti, specht, speight, spiced, spight, spigot, spiked, spooked, sposato, sposito, subacute, subject, subjected, subjugate, subjugated, subside, subsided, subsidy, subsist, substitute, substituted, sufficed, suffocate, suffocated, suffused, supposed, suspect, suspected