4 syllables:
corregidor

3 syllables:
editor, messidor, creditor, begetter, messenger, epicure, spellbinder, encipher, stem-winder, registrar, register, stepsister, well-wisher, breadwinner, hemisphere, pedicure, genitor, cellular, delaware, ecuador, elater, eleanor, endospore, engler, escobar, headhunter, hellebore, jennifer, leicestershire, leveler, leveller, meddler, medicare, megaspore, metaphor, mevacor, nebular, pedaler, pedaller, pensioner, predator, presenter, questioner, reckoner, regular, reservoir, reveler, reveller, second-year, seconder, secular, seminar, senator, sepulture, settler, sevener, specular, stepmother, strengthener, temperature, wrestler

4 syllables:
insectivore, subeditor, divestiture, expenditure, non sequitur, cash register, competitor, progenitor, acellular, art editor, asthenosphere, concessioner, confectioner, congenator, cross-questioner, dead metaphor, developer, embezzler, executor, high temperature, investiture, irregular, low temperature, molecular, noncellular, room temperature, sports editor, state senator, text editor, vulpecular

5 syllables:
southern hemisphere, eastern hemisphere, western hemisphere, northern hemisphere, primogeniture, body temperature, business editor, city editor, copy editor, curie temperature, divine messenger, drunken reveler, frozen metaphor, linkage editor

6 syllables:
cerebral hemisphere, absolute temperature, managing editor, newspaper editor

7 syllables:
capital expenditure, capital of delaware, capital of ecuador