2 syllables:
beat us, cetus, cletus, fetus, foetus, greet us, laetus, meatus, meet us, metus, thetis, treatise, treat us, wheatus

3 syllables:
akitas, boletus, caritas, carnitas, casitas, cbtis, circaetus, copetas, cricetus, gypaetus, komitas, lolitas, melitis, mellitus, milpitas, ouachitas, partitas, pepitas, philetus, rafetus, real betis, sabritas, servetus, sylhetis, vermetus

4 syllables:
amanitas, anacletus, anicetus, cellulitis, chiquititas, citrinitas, diabetus, divinitas, encinitas, eptatretus, graviditas, heracleitus, mammillitis, margaritas, pakicetus, papillitis, paracletus, parochetus, polycletus, romanitas, tonsillitis

5 syllables:
adipositas, ambulocetus, cerebellitis, exocoetus, gastroboletus, haliaeetus, labyrinthitis, mesocricetus

6 syllables:
cystopyelitis

7 syllables:
dermatocellulitis, pharyngotonsillitis

8 syllables:
the case study of vanitas

2 syllables:
maleness, cebus, negus, phoebus, rebus

3 syllables:
abidance, anthesis, adamance, agamous, camelus, fatuous, tantalus, scandalous, anoestrus, fractiousness, antabuse, ravenous, passionless, thalamus, astacus, flatulence, crapulous, handleless, calculus, ampleness, annulus, ambulance, abacus, averageness, tactlessness, acinous, bashfulness, hatefulness, balanus, thankfulness, blasphemous, fabulous, assonance, cannabis, gratefulness, accidents, accidence, abstinence, acanthus, handedness, fathomless, sanguineness, caducous, callousness, randomness, platanus, class-conscious, angelus, handsomeness, ancestress, crapulence, amoebous, cacicus

4 syllables:
analysis, unanimous, miraculous, magnanimous, ambassadress, gelatinous, paralysis, savageness, astragalus, recalcitrance, anachronous, dialysis, extravagance, capacitance, affableness, analogous, calamitous, intransigence, manageress, ungratefulness, substantialness, incandescence, arctocebus, cercocebus, king oedipus, leontocebus, naemorhedus, nycticebus

5 syllables:
pusillanimous, oleaginous, cartilaginous, renal calculus, cost analysis, erythrocebus

6 syllables:
systems analysis, integral calculus, psychoanalysis, flaccid paralysis, predicate calculus, functional calculus, hemodialysis

7 syllables:
infantile paralysis, harmonic analysis, regression analysis, urinary calculus, differential calculus

8 syllables:
qualitative analysis, gravimetric analysis, quantitative analysis

9 syllables:
infinitesimal calculus