2 syllables:
akkas, bacchus, baccus, backus, bacus, baucus, cacace, cacus, dacus, flaccus, gracchus, hakkas, jacchus, krakus, lacus, mac us, makis, saccus

3 syllables:
abakus, abaqus, aeacus, arachis, astacus, attack us, attacus, dipsacus, inachus, jim backus, lampsacus, nunchakus, opacous, opacus, psittacus, thapsacus

4 syllables:
caractacus, carpodacus, iliacus, karydakis, muntiacus, schistorrhachis

5 syllables:
melopsittacus, semiopacous

2 syllables:
maleness, batis, brackets, brattice, flatus, gadus, jackets, statice, tabis

3 syllables:
abidance, anthesis, adamance, agamous, camelus, fatuous, tantalus, scandalous, anoestrus, fractiousness, antabuse, ravenous, passionless, thalamus, 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, abattis, arabis, clematis, peratis, squash racquets

4 syllables:
analysis, unanimous, miraculous, magnanimous, ambassadress, gelatinous, paralysis, iapetus, savageness, astragalus, recalcitrance, anachronous, dialysis, extravagance, capacitance, affableness, analogous, calamitous, intransigence, manageress, ungratefulness, substantialness, incandescence

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

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