Fissures rhymes with:
fischer's, fisher's, fishers, fischer's, fisher's, fishers, wishers, afshar's, bashers, boshers, brashers, crushers, desrochers, dishwashers, extinguishers, finishers, fischer's, fisher's, fishers, flasher's, flashers, glacier's, glaciers, gushers, hampshire's, hamptonshire's, hasher's, hashers, kingfishers, mushers, new-hampshire's, photofinishers, pressure's, pressures, publisher's, publishers, publishers', pushers, staffordshire's, ushers, washers, wishers
Fissures sounds like:
fakers, ficorca, fieger's, figaroa's, figueras, figure's, figures, figurski, fischer's, fisher's, fisheries, fishers, fokkers, fuckers