2 syllables:
baelor, behler, bellar, beller, celer, cellar, dehler, deller, dweller, ehler, ellar, eller, fehler, feller, geller, heller, kaehler, kehler, kellar, keller, kneller, mehler, melear, meller, mellor, neller, peller, pelor, queller, reller, scheller, schneller, sellar, seller, sell her, sheller, shelor, smeller, sneller, speller, stellar, steller, sweller, teler, tell her, velir, wehler, weller, yeller, zeller

3 syllables:
angella, appellare, batteler, best-seller, bestseller, best seller, bierkeller, bookcellar, bookseller, book seller, bordeller, castellar, cave dweller, celldweller, chiseller, compeller, compel her, crassweller, cupeller, dispeller, druckfehler, drumheller, expeller, flagellar, foreteller, gfeller, good speller, impeller, impellor, indweller, lake-dweller, lamellar, langella, larzelere, mackellar, marsteller, marteler, marveller, mckellar, mckeller, micellar, mikkeller, modeller, nucellar, ocellar, outdweller, patellar, poor speller, print seller, propeller, propellor, rappeller, rathskeller, ratskeller, rebeller, repeller, reseller, root cellar, rostellar, rumseller, salt-cellar, saltcellar, scutellar, slop-seller, storm cellar, subcellar, substellar, surtshellir, tale-teller, tessellar, truth-teller, umbellar, vieillir, wine cellar

4 syllables:
bottom-dweller, cerebellar, circumstellar, cloud-compeller, columellar, cottage dweller, cyclone cellar, fortune-teller, fortuneteller, frikadeller, interpeller, interstellar, island-dweller, pedicellar, prepatellar, rockefeller, schlaer-mellor, screw propeller, story-teller, storyteller, subpatellar, subumbrellar, suprasellar, taleteller, teffeteller, underseller

5 syllables:
airplane propeller, infrapatellar, interlamellar, suprapatellar, tornado cellar

6 syllables:
john d. rockefeller, michael rockefeller, oysters rockefeller, sarah michelle gellar, spinocerebellar, stationery seller, supracerebellar

9 syllables:
olivopontocerebellar