3 syllables:
beamingly, dreamingly, gleamingly, screamingly, seemingly, teemingly

4 syllables:
beseemingly

3 syllables:
devisee, registry, entity, jestingly, levity, ethnically, dentistry, density, emily, lenity, effigy, helsinki, pleadingly, negligee, deviltry, legibly, self-pity, chemistry, selfishly, enmity, creakingly, feelingly, fiendishly, freakishly, heatedly, peevishly, secretly, teasingly, wheezingly, yieldingly

4 syllables:
integrity, aesthetically, 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, genetically, distressingly, immensity, protectively, authentically, impressively, dejectedly, obscenity, subjectively, esthetically, defensively, intensity, propensity, excessively, progressively, collectively, deceptively, symmetrically, appealingly, believingly, beseechingly, deceivingly, demeaningly, entreatingly, exceedingly, increasingly, misleadingly, repeatedly, strategically, unceasingly, unfeelingly, unreasoningly

5 syllables:
infidelity, overwhelmingly, comprehensively, pathetically, apprehensively, unexpectedly, hypothetically, imperceptibly, academically, geometrically, condescendingly, ineffectively, disbelievingly, unappealingly, unbelievingly, unhygienically

6 syllables:
theoretically, sympathetically, argumentatively