1 syllable:
-eous, -less, -tious, brosse, brus, bruss, bus, buss, busse, cba sce, clous, croise, crous, cr ccis, cus, cuss, fluss, fress, fuhs, fuss, gres gris, gruss, gus, guss, huss, klus, krus, kus, kuss, kyuss, lsass, ltspice, muhs, musse, nuss, nusse, pholas, plisse, plus, pluss, prma hs, prus, pruss, pspice, pus, puss, pvris, qwg cis, rndis, rus, russ, russe, scgis, schluss, schuss, shas, sluss, smbus, smr mis, struss, stuss, sus, suss, swisse, thrace, thus, thuss, tm mis, trus, truss, ttp hus, tusse, us, vl-bus, vtmis, wass, whmis, wuss, xus

2 syllables:
a-plus, abrus, adjusts, baitbus, barfuss, boltbus, careplus, catbus, concuss, cost-plus, cottbus, discuss, donruss, einfluss, erdnuss, excuss, funplus, ghattas, goldfus, gyruss, homerus, hpcode-plus, huertas, incuss, kingtruss, kottbus, loveplus, mistrusts, narus, netbus, non-pluss, nonplus, nonpluss, oneplus, opruss, pageplus, percuss, pileus, postbus, rambus, redbus, schoolbus, school bus, shortbus, succuss, untruss, vanhuss, walnuss, wrightbus

3 syllables:
adblock plus, banderas, camping bus, charlotte russe, cytisus, eurailpass, express bus, genus sus, gloomy gus, hasenfus, interfluous, minibus, muckenfuss, okenfuss, papenfuss, pelorus, repercuss, sasha luss, shuttle bus, subterfluous, superfluous, treasonous

4 syllables:
eleven-plus, the venture bros.

5 syllables:
simulations plus

6 syllables:
chamaecytisus

1 syllable:
butts, cuts, guts, huts, klutz, nuts, rutz, shuts, what's

2 syllables:
maleness, cold cuts

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

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