4 syllables:
genically

6 syllables:
antigenically, ecumenically, estrogenically, monogenically, neurasthenically, neurogenically, ontogenically, orogenically, pathogenically, photogenically, polygenically, psychogenically, schizophrenically

7 syllables:
abiogenically, anthropogenically, epeirogenically, iatrogenically

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

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

6 syllables:
theoretically, sympathetically, argumentatively, unintelligently

8 syllables:
urinary hesitancy