3 letters:
ary

4 letters:
airy, arie, bury, cary, dery, fery, gary, gery, jere, jeri, kari, kary, lary, mary, nary, neri, teri, vary, very, wary, wery

5 letters:
aerie, airey, alary, ameri, aperi, averi, azeri, barey, barie, barre, barry, berri, berry, carey, carie, carri, carry, cerri, cheri, chery, clari, clary, cleri, dairi, dairy, darry, derry, dveri, eleri, eyrie, faery, fairy, ferie, ferri, ferry, frary, garry, gehry, gerri, gerry, glary, hairy, harri, harry, herry, jerri, jerry, karry, kerri, kerry, lairy, larry, marri, marry, merri, merry, nairi, omary, oteri, parry, perry, sarie, scary, serri, serry, sheri, snary, stary, stere, tarry, terri, terry, uteri, vairy, varie, verri, verry, werry, xperi, yeiri

6 letters:
abheri, abkari, alarie, alteri, ambury, amerie, anbury, apiary, ariary, asbury, askari, aviary, a very, barrie, berrey, berrie, bibury, boveri, buerry, canary, carrey, carrie, cecere, celeri, ceneri, cerrie, cherie, cherri, cherry, conary, embury, equery, ere he, faerie, fairey, fairie, fedary, ferrie, finary, gerrie, glairy, hikari, horary, humeri, igneri, impery, jerrie, kairey, kaveri, kerrey, kerrie, kukeri, kulary, lateri, liberi, mairie, maseri, mcgary, mcnary, merrie, mhairi, moceri, numeri, oberry, patere, pecary, pedary, perrie, pierie, potere, prarie, querry, raneri, rebury, saberi, saveri, severi, sharee, sharie, sherie, sherri, sherry, skerry, soleri, sparry, sperry, sterry, sudary, tacere, telary, teleri, terrie, tiberi, unwary, valeri, vineri, viteri, werrey, wherry, zakari, zakary

7 letters:
acetary, agynary, andheri, annuary, aquarii, astbury, auberry, auctary, avebury, bagheri, banbury, barberi, begleri, bisleri, blomary, boilary, bsharri, bulgari, bunbury, cadbury, canarie, care he, cherrie, curreri, delleri, dentary, dietary, dispari, dubarry, duxbury, elsbury, epulary, equerry, esotery, estuary, exotery, febuary, feodary, ferreri, feudary, flotery, froneri, galleri, gasperi, golkeri, hanbury, helleri, herbary, histeri, hymnary, inmarry, italeri, januari, january, kasseri, kilbury, koshary, lactary, laniary, ledbury, letuary, library, librery, manjeri, manuary, marbury, mauceri, maugeri, maybury, mcclary, mccrary, mcgarry, mcherry, mcnairy, mutuary, newbery, newbury, nullary, o'berry, obolary, oculary, oldbury, oliveri, onerary, ossuary, ostiary, ovulary, palmary, palmeri, passeri, petrary, piacere, piscary, planary, plumeri, prairie, primary, raineri, ranieri, recarey, remarry, roxbury, ruggeri, scenary, scuderi, scudery, seabury, sectary, selleri, sextary, sherrie, signary, silveri, spiteri, st mary, sudbury, sunseri, tamberi, ternary, tetbury, tilbury, topiary, treveri, unchary, unitary, unmarry, unmerry, urinary, usurary, valarie, vallary, valleri, walleri, warkari

8 letters:
abhaneri, aestuary, akureyri, aleberry, amesbury, arborary, axillary, barbarie, barberry, bayberry, beriberi, bilberry, bloomary, bogberry, bolgheri, bonitary, bouderie, boxberry, bradbury, breviary, bructeri, buccheri, bulgarie, burberry, calamary, carberry, catenary, cavitary, cemetary, cemetery, chair he, chanderi, choudary, chowdary, cinerary, cometary, contrary, coronary, costmary, cowberry, crescere, crociary, cuglieri, culinary, decenary, decumary, dewberry, dewsbury, didsbury, dogberry, electary, elsberry, emissary, feaberry, februari, february, feburary, federary, finsbury, foxberry, funerary, gadberry, guarneri, hagberry, hanberry, himawari, honorary, hysterie, inkberry, jamberry, joculary, kaatteri, kerikeri, kintbury, lamasery, lapidary, legatary, limitary, literary, luminary, madikeri, marberry, mayberry, mcquerry, mcsherry, metairie, military, millbury, minutary, miscarry, monetary, mooberry, mortuary, mulberry, munerary, newberry, noctuary, nondairy, nonhairy, novenary, numerary, obituary, obiyuary, ocellary, octonary, oneberry, orbitary, ordinary, overwary, palmieri, peaberry, pejerrey, pesniary, phulkari, phyllary, polypary, portuary, prosperi, pupilary, pusateri, redberry, rosemary, ruderary, ruptuary, salutary, sanitary, saponary, savagery, seaberry, sedberry, seminary, septuary, sexenary, shivneri, simsbury, siserary, solidary, solitary, sringeri, stanbury, statuary, sudberry, sunberry, tamakeri, tayberry, teaberry, tertiary, textuary, there he, tipulary, tunicary, tutelary, vespiary, vestiary, vicenary, viguerie, waxberry, westbury, where he, winberry, woodbury, yarberry

9 letters:
abecedary, abortuary, accessary, acheilary, actionary, adversary, ampullary, ancillary, arbitrary, armillary, arrectary, atterbury, aylesbury, bad fairy, baiuvarii, baneberry, barillari, bearberry, beri-beri, billberry, bleaberry, blueberry, bradberry, brimberry, brinjarry, budgetary, calculary, camilleri, canonbury, canzoneri, capillary, car-ferry, cartulary, cassowary, centenary, cerveteri, charlbury, conoscere, contrarry, corollary, cottonary, cranberry, crowberry, cursorary, customary, custumary, cutcherry, deerberry, delhivery, dignitary, ditionary, dromedary, duodenary, dysentery, echeverri, electuary, februarie, feudatary, fidiciary, fiduciary, formicary, formulary, fourberie, fructuary, fuckjerry, gallberry, glengarry, goldberry, granberry, granulary, hackberry, hail mary, hansberry, hari-kari, hermitary, hindberry, homiliary, honourary, ikenberry, imaginary, insectary, itinerary, janissary, judiciary, juneberry, kalamkari, kingsbury, knobkerry, knotberry, lacrymary, lansberry, laprairie, legendary, legionary, librairie, lineberry, lingberry, macbinary, macquarie, macsharry, mahalwari, maleberry, mamillary, mandatary, manokwari, mapillary, marlberry, mavroneri, mealberry, medullary, mercenary, mesentery, momentary, monastery, monestary, montazeri, moorberry, mulctuary, munnerary, naseberry, necessary, nobiliary, non-dairy, nummulary, nundinary, officiary, orbituary, originary, oso-berry, papillary, parcenary, parietary, pecuniary, peri-peri, peristeri, petiolary, pillsbury, pineberry, pinkberry, pituitary, planetary, pokeberry, ponderary, pothecary, poundbury, presidary, proletary, pulmonary, pupillary, questuary, rancherie, raspberry, receptary, red-berry, residuary, rhinoceri, riceberry, rockferry, rocoberry, roseberry, routinary, sanctuary, sandberry, scapulary, scarberry, schoharie, scriniary, secondary, secretary, sedentary, seintuary, shadberry, sigillary, snowberry, soapberry, societary, stanberry, subahdary, sublunary, subsidary, subsolary, sumptuary, temporary, termatary, termitary, thornbury, tipperary, tributary, tricenary, twinberry, vexillary, visionary, vulnerary, waterbury, westberry, whimberry, whinberry, wineberry, wolfberry, woodberry, z-library, zamindary, zemindary, zoe perry

10 letters:
airy-fairy, apothecary, appleberry, argenterie, arterberry, auctionary, balistreri, blackberry, bloodberry, bloomsbury, bob-cherry, buckcherry, bucklebury, bunchberry, canterbury, caperberry, capitulary, cautionary, certiorari, cessionary, cheboksary, chinaberry, chincherie, chokeberry, cloudberry, cloudinary, commentary, commissary, consectary, consultary, coralberry, crackberry, crakeberry, depositary, dermopteri, derryberry, dictionary, dinanderie, dispensary, doonesbury, dysenterie, eckelberry, elderberry, embolomeri, enniskerry, epistolary, exigendary, exmilitary, factionary, fibrillary, fictionary, flos-ferri, fluxionary, fritillary, gall-berry, goldsberry, gooseberry, grandberry, gwen berry, heathberry, hereditary, hockenbury, honeyberry, illuminary, imprimerie, infinitary, insalutary, insanitary, involutary, jade carey, jostaberry, justiciary, knobkerrie, lachrymary, lectionary, loganberry, macquarrie, magnanerie, make merry, male berry, malmesbury, mammillary, mansionary, marksberry, matutinary, mercenarie, middlebury, millionary, mirabilary, missionary, nannyberry, octogenary, palminteri, passionary, patibulary, pensionary, pictionary, pigmentary, pin cherry, plumassary, portaferry, prebendary, preprimary, presidiary, promissary, promptuary, propietary, ptilopteri, puducherry, quaestuary, quaternary, registrary, rheinberry, rosenberry, rotenberry, rougeberry, rowanberry, rum cherry, sanguinary, saulsberry, secretarie, segmentary, sexagenary, sheepberry, shrewsbury, snakeberry, spiceberry, sprayberry, squawberry, stansberry, stationary, stationery, stercorary, stradivari, strawberry, subreptary, subsidiary, sugarberry, talakaveri, tangasseri, thornberry, triobolary, tuitionary, tumultuary, ubiquitary, unguentary, unliterary, unmilitary, unordinary, unsanitary, vehiculary, veterinary, vocabulary, voluptuary, wednesbury, wiktionary, wild clary, wurundjeri, youngberry, zythepsary

11 letters:
ablutionary, accustomary, actinopteri, additionary, antiphonary, apocrisiary, armamentary, beautyberry, beneficiary, bicentenary, bing cherry, bird cherry, bloody mary, blood berry, bollettieri, brackenbury, brouillerie, bryan ferry, burgdorferi, cackleberry, candleberry, carabinieri, casselberry, cassioberry, castleberry, chokecherry, codicillary, coercionary, coffeeberry, collegatary, concubinary, condottieri, consiglieri, coparcenary, cosignitary, cotemporary, cruiseferry, dangleberry, delusionary, dingleberry, dishonorary, divisionary, domicillary, extemporary, farkleberry, filamentary, fractionary, fragmentary, francesmary, fuji cherry, functionary, ganglionary, glastonbury, groundberry, grouseberry, halle berry, hebdomadary, hockenberry, honey berry, huckleberry, hurtleberry, hypothecary, illusionary, interlunary, involuntary, koshihikari, leatherbury, libationary, ligamentary, linda perry, lingonberry, locutionary, londonderry, longanberry, marionberry, mickelberry, mid-january, mirabiliary, nonliterary, nonmilitary, pamphletary, petitionary, phalanstery, pizzoccheri, poisonberry, pondicherry, preambulary, preliminary, proprietary, proseminary, quarternary, queensberry, questionary, reactionary, referendary, religionary, revisionary, salal-berry, salmonberry, sanctionary, sand cherry, seditionary, shrewsberry, silverberry, sour cherry, steve perry, subaxillary, subliterary, subordinary, superlunary, tagliaferri, tenementary, throneberry, tricliniary, unarbitrary, uncustomary, unmercenary, unnecessary, unnesessary, unvoluntary, virgin mary, volitionary, wheat berry, wild cherry, winterberry, wonderberry

12 letters:
abolitionary, acanthopteri, accretionary, adminiculary, antimilitary, black cherry, bog rosemary, brambleberry, brickleberry, buffaloberry, checkerberry, choke-cherry, christenbury, coffee berry, consignatary, constabulary, contemporary, contributary, cotyledonary, crackerberry, dangle-berry, deflationary, demissionary, disciplinary, distributary, diversionary, elocutionary, evolutionary, exclusionary, expansionary, extortionary, faulkenberry, frankenberry, ground-berry, grouse-berry, heart cherry, impellitteri, inclusionary, inflationary, interlibrary, leatherberry, meadow clary, mid-february, neneh cherry, ngarrindjeri, non-military, nonarbitrary, nonvoluntary, nutritionary, obedienciary, olallieberry, open primary, paramilitary, pigeon berry, plebiscitary, postliminary, precapillary, previsionary, probationary, provisionary, recessionary, red mulberry, reflationary, reversionary, salmon berry, secretionary, septuagenary, serviceberry, sexcentenary, silver berry, sparkleberry, spindleberry, subpulmonary, subscapulary, superficiary, sweet cherry, tercentenary, thimbleberry, traditionary, tricentenary, trifistulary, usufructuary, valetudinary, whortleberry, yellow berry

13 letters:
bibliothecary, castelnaudary, christenberry, commissionary, common canary, complexionary, concessionary, conclusionary, concretionary, confectionary, confectionery, confessionary, conventionary, convulsionary, counter-parry, devolutionary, digressionary, discretionary, distortionary, evangelistary, evolutionnary, expeditionary, extraaxillary, extralimitary, extraordinary, genitourinary, geostationary, ground cherry, hepatobiliary, hog cranberry, hypopituitary, illocutionary, indian cherry, interaxillary, intraaxillary, intracavitary, juniper berry, laurel cherry, lego-literary, low blueberry, marco tamberi, multitudinary, neel kashkari, nonhereditary, nonstationary, octocentenary, phytosanitary, plenitudinary, possessionary, postliminiary, postsecondary, prairie berry, primogenitary, processionary, prolegomenary, pudding berry, quincentenary, redemptionary, red raspberry, revolutionary, scoot mcnairy, semicentenary, semilegendary, subventionary, subversionary, supernumerary, televisionary, tom and jerry, transitionary, war secretary, wild rosemary, winter-cherry, winter cherry

14 letters:
benedictionary, bird sanctuary, black mulberry, bladder cherry, closed primary, co-beneficiary, coevolutionary, consuetudinary, cussuetudinary, direct primary, dwarf mulberry, extramedullary, extrapulmonary, fidimplicitary, he-huckleberry, home secretary, hyperpituitary, infra-axillary, inquisitionary, institutionary, intercapillary, interplanetary, interpupillary, intramedullary, intrapulmonary, invaletudinary, marsh rosemary, monocarpellary, navy secretary, nonproprietary, norfolk wherry, paper mulberry, partridgeberry, perlocutionary, polycarpellary, post-secondary, prohibitionary, protoplanetary, public library, restrictionary, rms queen mary, rosebud cherry, sapphire berry, sea gooseberry, similitudinary, stagflationary, supra-axillary, surinam cherry, swamp dewberry, tintinnabulary, undersecretary, white mulberry, wild cranberry, wild raspberry

15 letters:
adrenomedullary, barbados cherry, black raspberry, box huckleberry, buckthorn berry, cape gooseberry, cardiopulmonary, catalina cherry, chief secretary, christmas berry, desk dictionary, disinflationary, disquisitionary, dwarf blueberry, extradictionary, fideicommissary, hepatopulmonary, insurrectionary, interjectionary, jamaican cherry, japanese cherry, labor secretary, large cranberry, lending library, neurofibrillary, noninflationary, oriental cherry, pleuropulmonary, program library, quatercentenary, sand blackberry, sesquicentenary, small cranberry, splenomedullary, steven bradbury, substitutionary, suprascalpulary, swamp blueberry, true blackberry, under-secretary, vicissitudinary, wild strawberry, wood strawberry

16 letters:
arteriocapillary, beach strawberry, bronchopulmonary, chazz palminteri, energy secretary, evergreen cherry, flowering cherry, irish strawberry, jerusalem cherry, make unnecessary, matthew c. perry, native cranberry, non-inflationary, polycotyledonary, results may vary, social secretary, swamp blackberry, western dewberry

17 letters:
american dewberry, amoebic dysentery, anti-inflationary, antirevolutionary, black huckleberry, ceylon gooseberry, circumlocutionary, defense secretary, electro-capillary, european dewberry, garden strawberry, gianmarco tamberi, interdisciplinary, karnam malleswari, little dictionary, macroevolutionary, maraschino cherry, microevolutionary, multidisciplinary, non-discretionary, northern dewberry, official emissary, pocket dictionary, project hail mary, representationary, school dictionary, solemnity of mary, southern dewberry, transdisciplinary

18 letters:
american cranberry, american hackberry, american raspberry, anterior pituitary, assumption of mary, chilean strawberry, chinese gooseberry, commerce secretary, common bird cherry, cross-disciplinary, depository library, european blueberry, european cranberry, european hackberry, european raspberry, fool's huckleberry, garden huckleberry, interior secretary, mountain cranberry, multi-disciplinary, post-revolutionary, running blackberry, scarlet strawberry, treasury secretary, western blackberry, west indian cherry

19 letters:
barbados gooseberry, circulating library, common bog rosemary, downy ground cherry, education secretary, envoy extraordinary, evergreen blueberry, executive secretary, flowering raspberry, mountain blue berry, posterior pituitary, virginia strawberry, western sand cherry

20 letters:
bilingual dictionary, counterrevolutionary, dynamic-link library, european bird cherry, mexican black cherry, oriental bush cherry, purple ground cherry

21 letters:
agriculture secretary, apalachicola rosemary, collegiate dictionary, counter-revolutionary, cultivated strawberry, dwarf cape gooseberry, electronic dictionary, evergreen huckleberry, madeira winter cherry, unabridged dictionary

22 letters:
new zealand wine berry, rocky mountains cherry

23 letters:
etymological dictionary, mediterranean hackberry, winter flowering cherry

24 letters:
transportation secretary

25 letters:
execution of navid afkari, japanese flowering cherry

27 letters:
machine readable dictionary

28 letters:
there's something about mary

6 letters:
popery

7 letters:
mockery, pottery, tottery, jobbery, coppery, lottery, robbery, roguery, rockery

8 letters:
drollery, crockery, quandary, snobbery, flummery

10 letters:
promontory

11 letters:
camaraderie

13 letters:
armed robbery

15 letters:
on the contrary, to the contrary