Unseal rhymes with:
conceal, conceal, cecile, cele, ciel, conceal, lucile, lucille, pierceall, pospisil, reseal, seal, seale, seel, vasil
Unseal sounds like:
unanimously, uncle, uncoil, uncool, uneasily, unequal, unglue, unicycle, uniquely, unocal, unsell, unshackle, unusual, unusually, unwisely