3 syllables:
capital, capitale, capitol, kapital

4 syllables:
block capital, dutch capital, french capital, greek capital, noncapital, prucapital, risk capital, small capital, state capital, transcapital

5 syllables:
british capital, belgian capital, cuban capital, danish capital, finnish capital, german capital, haitian capital, intercapital, irish capital, russian capital, spanish capital, turkish capital, venture-capital, venture capital, working capital

6 syllables:
angolan capital, australian capital, austrian capital, brazilian capital, egyptian capital, hawaiian capital, honduran capital, indian capital, italian capital, jamaican capital, japanese capital, laotian capital, malaysian capital, mexican capital, national capital, provincial capital

7 syllables:
albanian capital, algerian capital, american capital, bulgarian capital, cambodian capital, canadian capital, hungarian capital, iranian capital, liberian capital, nicaraguan capital, nigerian capital, operating capital, salvadoran capital, united states capitol

8 syllables:
panamanian capital

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, vaginal, radical, basophil, saxatile, radicle, actable, maximal, damnable, acapnial, acetal, astragal, battleful, blamable, canistel, canticle, fragmental, planetal, ratable, tamable, trackable

4 syllables:
extractable, admirable, matabele, invaluable, detachable, propranolol, pack animal, infallible, translatable, unchangeable, abactinal, impalpable, hexagonal, infrangible, unflappable, irrational, compatible, inflammable, moss animal, tameable, marriageable, adaptable, grand national, unpassable, attachable, contrapuntal, collapsible, translational, diagonal, impassable, intractable, expandable, free radical, spermatocele, grammatical, intangible, octagonal, expansible, implacable, fashionable, impractical, merchantable, collapsable, contractable, dead animal, draft animal, farm animal, nontaxable, protractible, sea animal, unmatchable, work animal

5 syllables:
understandable, multinational, international, semiannual, incompatible, combinational, ideational, ethyl radical, gnawing animal, hemiacetal, interactional, marine animal, methyl radical, noncollapsable, noncollapsible, nonretractable, unadaptable, unattackable, ungrammatical, vinyl radical

6 syllables:
domestic animal, anagrammatical, cyanide radical, diagrammatical, fictional animal, methylene radical

7 syllables:
predatory animal

8 syllables:
rotary international