Hardcastle's rhymes with:
newcastle's, newcastle's, apostles, axles, bluepencils, bristles, brussels, cancels, capsules, cassells, cassels, castle's, castles, cecil's, council's, councils, counsel's, counsels, decelles, dismissals, drexel's, euromissiles, fossils, gesell's, hassles, hustles, imbeciles, ketzel's, meisels, metamucil's, microfossils, missile's, missiles, missiles', morsels, muscles, mussels, nestle's, nestles, newcastle's, parcells, parcels, pencils, pixels, rehearsals, reversals, russel's, russell's, stossel's, thistles, tonsils, tussles, universal's, utensils, vassals, vessel's, vessels, wessells, wessels, whistles, wienerschnitzel's, wrestles