5 syllables:
heretically, hermetically, magnetically, paretically, pathetically

6 syllables:
parenthetically, sympathetically, theoretically

8 syllables:
electrophoretically

3 syllables:
devisee, registry, entity, jestingly, levity, ethnically, dentistry, density, emily, lenity, effigy, helsinki, pleadingly, negligee, deviltry, legibly, self-pity, chemistry, selfishly, enmity

4 syllables:
integrity, technically, expensively, domestically, extensively, successively, ethically, coquettishly, yosemite, devilishly, selectively, aggressively, affectingly, refreshingly, indemnity, hygienically, objectively, professedly, identity, effectively, expressively, necessity, attentively, celebrity, offensively, complexity, collectedly, respectively, dementedly, distressingly, immensity, protectively, authentically, impressively, dejectedly, obscenity, subjectively, defensively, intensity, propensity, excessively, progressively, collectively, deceptively, symmetrically, delicacy, elegantly, equitably, hectically, hesitancy, hesitantly, medically, plentifully, residency, skeptically

5 syllables:
infidelity, overwhelmingly, comprehensively, apprehensively, unexpectedly, imperceptibly, academically, geometrically, condescendingly, ineffectively, effeminacy, indelicacy, inelegantly, intelligently

6 syllables:
argumentatively, unintelligently

8 syllables:
urinary hesitancy