1 syllable:
-assed, -blast, -plast, asked, ast, bast, blast, blast-, brassed, brast, cast, caste, chast, classed, clast, fasst, fast, gassed, gast, ghast, glassed, glast, grassed, hast, jfast, kast, kaste, last, laste, massed, mast, mast-, nast, naste, passed, past, pcast, plast, rast, raste, sassed, snast, strast, thrast, vast, vfast, vlast, wtfast, -based, -faced, aced, aist, baist, based, baste, braced, cased, chased, chaste, faced, g-taste, graced, haste, kaist, laced, maced, mayst, paced, paiste, paste, placed, raced, spaced, specced, taste, thraste, traced, vaste, waist, waste

2 syllables:
agelast, aghast, amassed, amcast, arblast, attaste, at last, back-blast, backblast, backcast, bare-assed, bedfast, beechmast, belfast, biassed, blogcast, bomb blast, breastfast, broadcast, buckfast, bumbast, by-past, bypassed, bypast, chromecast, coldcast, comcast, contrast, cragfast, crevassed, damast, dbfast, declassed, deskfast, dicast, die-cast, diecast, dismast, divast, downcast, dreamcast, dynast, e'last, erast, fail-fast, fantast, fly-cast, fly-past, forcast, forecast, foremast, forepassed, forepast, forncast, g.fast, gamecast, go past, gymnaste, half-assed, half-mast, halfassed, handfast, harassed, hard-assed, headfast, holdfast, hold fast, icast, icecast, lambast, leaf cast, light-fast, lightfast, locast, lockfast, mainmast, makefast, march-past, mercast, mimecast, miscast, molecast, nefast, netcast, newscast, nonpast, nowcast, offcast, ooblast, outcast, outcaste, outclassed, outgassed, outlast, palast, parcast, phantast, podcast, portlast, precast, qualcast, quantcast, recast, remast, repassed, rogfast, roughcast, ryfast, sand-cast, sandblast, sand cast, screencast, shamefast, shoe-last, shoutcast, sitfast, smart-assed, smashcast, smodcast, soothfast, sportscast, standfast, stand fast, starrcast, statcast, steadfast, stedfast, sunfast, surpassed, symplast, tear-gassed, the last, thronecast, tight-assed, tooncast, top-mast, topmast, trade-last, transfast, trespassed, trispast, type-cast, typecast, umbecast, uncast, upcast, vinfast, vodcast, webcast, whirl-blast, windblast, wormcast, 10base-t, 10gbase-t, abased, allwaste, andraste, backspaced, bald-faced, baldfaced, bare-faced, belaced, bell-faced, black-faced, bold-faced, boldfaced, broad-based, broadbased, change taste, chub-faced, crabfaced, cream-faced, debased, defaced, desgaste, disgraced, displaced, distaste, dog-faced, dough-faced, e-waste, effaced, embraced, empaste, emplaced, encased, enlaced, erased, ewaste, faith-based, false-faced, fast-paced, fishpaste, flypast, food waste, foretaste, forewaste, forwaste, freebased, fresh-faced, full-faced, glass-faced, half-caste, half-faced, horse-faced, impaste, incased, inlaced, in haste, kleinpaste, land-based, lean-faced, leertaste, lightfaced, long-faced, miltwaste, misplaced, moon-faced, onetaste, outfaced, outpaced, outraced, pale-faced, pie-faced, pitch-faced, po-faced, post-haste, posthaste, puff paste, pug-faced, radwaste, red-faced, replaced, retraced, rock-faced, round-faced, rule-based, self-paced, shamefaced, sheep-faced, shirtwaist, shit-faced, shitfaced, showcased, smock-faced, smooth-faced, snail-paced, snot-faced, stone-faced, straight-faced, straight-laced, strait-laced, surbased, sweet-faced, text-based, tight-laced, toothpaste, transplaced, two-faced, ultraist, unbraced, uncased, unchaste, unlaced, unplaced, unspaced, untaste, untraced, wasp waist, web-based, wheatpaste, whey-faced, white-faced, yorkbased

3 syllables:
acid-fast, acroblast, aftercast, alloplast, altacast, antepast, antispast, anycast, apoplast, archiblast, astroblast, at long last, autoplast, bandobast, bioblast, bioplast, brachyblast, cablecast, centroblast, chiliast, chiroplast, chloroplast, chondroblast, chromoblast, chromoplast, cobbler's last, colloblast, coloplast, colorcast, colorfast, colourcast, colourfast, counterblast, countercast, cranioclast, cuban bast, cybercast, cystoplast, cytoblast, cytoplast, dermoblast, duroplast, ectoblast, endoblast, endocast, endoplast, entoblast, epiblast, everlast, fibroblast, first and last, flabbergast, fore-topmast, foretopmast, gigablast, gonoblast, gymnoplast, gypsoplast, hard-and-fast, hazelcast, hemoblast, hesychast, holoblast, homoplast, hydrocast, hypoblast, intercast, jiggermast, jurymast, jury mast, laserblast, leucoblast, leucoplast, leukoblast, leukoplast, lipoblast, lithoclast, lymphoblast, medifast, meroblast, mesoblast, mesoplast, metaphrast, metaplast, microblast, microvast, miracast, mitoplast, mizenmast, mizzenmast, monoblast, monoplast, mooring mast, multicast, multifaced, myoblast, mythoclast, narrowcast, needle cast, neuroblast, neuromast, neurospast, next-to-last, open-cast, opencast, orgiast, overcast, overmast, overpassed, overpast, parablast, paraphrast, pendergast, pentaspast, periblast, periplast, phenoplast, phragmoplast, planoblast, plasmablast, plaster cast, pleonast, pleonaste, polyblast, polycast, polyspast, prendergast, protoplast, pyroclast, rebroadcast, rockpalast, royalmast, royal mast, rubriblast, sarcoblast, sarcoplast, silverfast, simulcast, solo blast, spermoblast, spheroplast, spongioblast, spongoblast, sporoblast, statoblast, superfast, telecast, teloblast, thomas nast, thromboblast, tillinghast, tonoplast, triplecast, trophoblast, trophoplast, ultrafast, undercast, unicast, unsteadfast, unsurpassed, very fast, voltaplast, weathercast, wirecast, xenoblast, 1000base-t, about-faced, aftertaste, apple-faced, ashen-faced, baby-faced, barefaced, body waste, boy erased, brazen-faced, cineaste, conacaste, copper-faced, cut-and-paste, data-based, databased, dirty-faced, double-faced, double-spaced, doublespaced, fiber-faced, freckle-faced, giddy-paced, hatchet-faced, human waste, hypostased, interfaced, interlaced, interspaced, in good taste, in poor taste, iron-cased, janus-faced, knowledge-based, laying waste, lowercased, narrow-based, open-faced, overhaste, pantywaist, pasty-faced, platter-faced, poker-faced, putty-faced, quarry-faced, self-abased, sense of taste, single-spaced, stonefaced, stony-faced, tagasaste, tallow-faced, thorough-braced, thorough-paced, thoroughpaced, toxic waste, undefaced, unerased, weasel-faced, wizen-faced, zero-based

4 syllables:
adenoblast, ameloblast, aminoplast, amyloplast, angioblast, apremilast, audiocast, biblioclast, blepharoplast, cementoblast, chirogymnast, disdiaclast, ecclesiast, ecdysiast, elaioplast, elastoplast, elegiast, embryoblast, encomiast, enthusiast, entosthoblast, erythroblast, etioplast, gonimoblast, granuloblast, gymnasiast, haemangioblast, haematoblast, haematoplast, hemangioblast, hematoblast, iconoclast, idioblast, idoloclast, immunoblast, kinetoplast, lecithoblast, megaloblast, melanoblast, myeloblast, nematoblast, odontoblast, odontoclast, odontoplast, orbitoclast, osteoblast, osteoclast, osteoplast, pansporoblast, pronormoblast, sideroblast, slartibartfast, spermatoblast, symposiast, weather forecast, anchovy paste, evidence-based, library paste, mulberry-faced, permissive waste, theory-based, tomato paste

5 syllables:
adamantoblast, cnidoblast, cytotrophoblast, dead hand of the past, hemocytoblast, leukocytoblast, myofibroblast, nesidioblast, phagocytoblast, radio broadcast, religious outcast, reality-based

6 syllables:
kaliningrad oblast, alimentary paste

7 syllables:
syncytiotrophoblast, toxic industrial waste

1 syllable:
draft, haft, aft, kraft, craft, splashed, crashed, chafed, lashed, taft, trashed, graft, gashed, raft, draught, smashed, dashed, shaft, slashed, daft, bashed, clashed, laughed, staffed

2 syllables:
time draft, bank draft, life raft, air shaft, abashed, engraft, abaft, redraft, sight draft, skin graft, butt shaft

3 syllables:
landing craft, unabashed, allograft, autograft, balsa raft, banker's draft, corneal graft, foreign draft, homograft, pleasure craft, rotor shaft, sleeping draught, xenograft

4 syllables:
heterograft, mosquito craft, rotating shaft, transmission shaft

5 syllables:
william howard taft