3 syllables:
monial

4 syllables:
baronial, colonial, demonial, oogonial, simonial

5 syllables:
antimonial, archegonial, carpogonial, ceremonial, diagonial, homaxonial, matrimonial, oxygonial, paray-le-monial, patrimonial, post-colonial, postcolonial, pre-colonial, precolonial, sanctimonial, testimonial

6 syllables:
anticolonial, intercolonial, neocolonial, spermatogonial, unceremonial

3 syllables:
lacrimal, taxable, campanile, practical, passable, rational, madrigal, satiable, laughable, valuable, blastemal, cashable, manacle, fractional, clavicle, addable, affable, cascabel, tractable, palatal, actinal, tangible, casual, graspable, animal, anginal, nahuatl, mandible, fallible, actual, flammable, cannibal, national, acetyl, basketful, palpable, anodal, placable, addible, hasdrubal, capital, vaginal, radical, basophil, saxatile, radicle, actable, maximal, damnable, jovial, novial

4 syllables:
extractable, admirable, matabele, invaluable, detachable, propranolol, pack animal, infallible, translatable, unchangeable, abactinal, impalpable, hexagonal, infrangible, unflappable, irrational, risk capital, compatible, inflammable, moss animal, tameable, marriageable, adaptable, grand national, unpassable, attachable, small capital, contrapuntal, collapsible, translational, diagonal, impassable, intractable, expandable, free radical, spermatocele, grammatical, intangible, octagonal, expansible, implacable, fashionable, impractical, merchantable, binomial, colloquial, custodial, microbial, parochial

5 syllables:
working capital, venture capital, understandable, multinational, international, semiannual, incompatible, combinational, ideational, polynomial

6 syllables:
national capital, domestic animal, antimicrobial

7 syllables:
operating capital

9 syllables:
degree of a polynomial