1 syllable:
-fest, .test, blust, brust, bused, bussed, bust, christe, clist, crust, cussed, dust, dwm ust, fussed, fust, guist, gust, guste, hd bist, hkust, hust, just, knust, krust, kruste, lust, mussed, must, prust, rust, schussed, seced, shist, sussed, thrust, trussed, trust, wrust, yust

2 syllables:
adjust, adust, bedust, betrust, bewusst, blood-lust, braintrust, bulldust, buybust, centrust, clevetrust, coaldust, combust, concussed, crop-dust, debussed, discussed, disgust, distrust, earth's crust, encrust, entrust, flax rust, flingdust, giftrust, gold-dust, goldust, gold dust, healthtrust, incrust, intrust, knife thrust, mistrust, moondust, non-plussed, nonplused, nonplussed, onrust, outthrust, pentrust, percussed, piecrust, pie crust, robust, saint-just, sawdust, self-trust, shortcrust, slothrust, smartdust, stardust, suntrust, undust, unjust, unlust, untrust, upthrust, verlust, vetust, volksrust, wantrust, wheat rust, white rust

3 syllables:
active trust, angel dust, anti-trust, antirust, antitrust, apple rust, beyondtrust, blister rust, breach of trust, bundobust, citytrust, clifford trust, coadjust, cosmic dust, cut-and-thrust, deed of trust, diamond dust, direct trust, dry-as-dust, dryasdust, duricrust, express trust, grantor trust, hathitrust, identrust, implied trust, indiscussed, kissingcrust, living trust, meditrust, mid-august, misadjust, overthrust, overtrust, passive trust, prudentrust, public trust, readjust, repercussed, self-disgust, self-distrust, showing trust, spendthrift trust, totten trust, unadjust, underthrust, undiscussed, unitrust, upper-crust, upper crust, ustrust, voting trust, wanderlust

4 syllables:
ameritrust, constructive trust, investment trust, resulting trust, savings bank trust, trustee-in-trust

5 syllables:
charitable trust, fixed investment trust, savings account trust, white pine blister rust

6 syllables:
discretionary trust, involuntary trust, radioactive dust, testamentary trust, unit investment trust

7 syllables:
interplanetary dust

2 syllables:
tempest, dentist

3 syllables:
apprenticed, celebrant, decadent, deficit, definite, delegate, delicate, desiccant, desolate, detriment, elegant, element, elephant, eloquent, emigrant, eminent, estimate, etiquette, evident, excellent, excrement, exquisite, feculent, federalist, geminate, heaven-sent, methodist, negligent, pediment, pessimist, pestilent, petulant, prejudiced, prevalent, redolent, regiment, registrant, relevant, requisite, resonant, secondment, sediment, sentiment, settlement, specialist, tegument, temperament, tenement, testament, vellicate

4 syllables:
affectionate, anesthetist, antecedent, areca nut, bedevilment, benevolent, connecticut, development, ear specialist, embezzlement, envelopment, expressionist, geneticist, heart specialist, impediment, impressionist, indefinite, inelegant, integument, intelligent, irrelevant, malevolent, new testament, nonresident, nonresonant, old testament, perfectionist, predestinate, preeminent, prerequisite, presentiment, resettlement, rogue elephant, sea elephant, self-evident, trace element, trade deficit, unprejudiced, white elephant

5 syllables:
budget deficit, frontier settlement, land development, logic element, marriage settlement, nondevelopment, picture element, rare-earth element, redevelopment, threshold element, underestimate, unintelligent

6 syllables:
african elephant, chemical element, federal deficit, fingerprint specialist, housing development, indian elephant, medical specialist, metallic element, property settlement, ribbon development, underdevelopment, water development

7 syllables:
alluvial sediment, arrested development, identity element, imperial elephant, viatical settlement

8 syllables:
capital of connecticut

9 syllables:
housing and urban development

13 syllables:
department of housing and urban development

14 syllables:
secretary of housing and urban development

16 syllables:
international bank for reconstruction and development