Sotheby rhymes with:
barnaby, burnaby, farabee, huckabee, huckaby, jackoby, larabee, larrabee, lockaby, wallaby, willoughby
Sotheby sounds like:
saathoff, sachdev, sadoff, sedative, sedivy, setup, skydive, staab, stab, staff, staffa, staib, stapf, staph, stapp, staub, stauff, staup, stave, steeb, steep, stefa, steffe, steffey, steffi, steffie, steffy, steib, step, steph, stepha, stepp, steppe, steve, stevie, stief, stieve, stiff, stipe, stipp, stobbe, stobie, stoff, stoop, stop, stopa, stoup, stove, stub, stubbe, stubby, stuebe, stueve, stuff, stuffy, stupa, stupay, stupp, stuve, suggestive