1 syllable:
-form, corm, dorm, dorme, form, forme, horme, norm, norme, orme, phpstorm, schwarm, scorm, slorm, storm, swarm, torme, warm, xform

2 syllables:
age norm, arkstorm, art form, aswarm, ausform, barnstorm, bestorm, biform, blamestrorm, blogswarm, bloodstorm, bound form, brainstorm, by-form, cairngorm, change form, claim form, conform, conforme, deform, deforme, difform, difforme, dust-storm, duststorm, dust storm, efform, enform, enorm, enorme, firestorm, flexform, freeform, free form, hailstorm, ice storm, inform, informe, jotform, landform, landstorm, lauwarm, leaf form, lifeform, life form, lightstorm, line storm, lukewarm, maelstorm, misform, outform, outstorm, perform, perform', planform, platform, plattform, pliform, pre-storm, preform, pro-form, proform, rainstorm, raystorm, re-form, reform, rewarm, sandstorm, slipform, snowstorm, springform, t-norm, t-storm, take form, tax form, transform, triform, tubeform, unform, unwarm, upswarm, verse form, waveform, wave form, webform, whereform, wildstorm, windstorm, word form, z-transform

3 syllables:
aciform, acneform, aeriform, aliform, andrew form, anguiform, ansiform, aquiform, arciform, auriform, bacciform, beeldenstorm, benidorm, boniform, boviform, branchiform, brianstorm, bromoform, bulbiform, bulletstorm, bulliform, bursiform, cactiform, calciform, cancriform, capriform, castlestorm, cauliform, celliform, chancriform, cheliform, chloroform, chloroforme, chyliform, ciliform, cineform, cirriform, claviform, coliform, colliform, cominform, conchiform, coniform, cordiform, cordoform, corniform, coryneform, costiform, cribriform, cross-platform, crossplatform, cruciform, cruciforme, cteniform, cubiform, cultriform, cuniform, curviform, cymbiform, deiform, dendriform, dentiform, disciform, disinform, dolioform, ensiform, equiform, fabiform, falciform, feliform, fibriform, ficiform, filiform, filiforme, floriform, fluoroform, fundiform, fungiform, funiform, funnelform, fusiform, galliform, gangliform, gasiform, gastronorm, gemmiform, geostorm, ginglyform, glandiform, graniform, gruiform, guttiform, halestorm, haloform, hamiform, harengiform, homiform, hydriform, inconform, isoform, janiform, juliform, kaliform, kidney-form, lanciform, land-reform, land reform, larviform, lentiform, leptiform, letterform, libriform, ligniform, lindiform, linguiform, lituiform, luciform, luniform, lupiform, lyriform, maidenform, mammiform, maniform, microform, misinform, misreform, mitriform, montiform, moriform, motorstorm, muciform, multiform, mummiform, muriform, musciform, myrtiform, napiform, nariform, nasiform, natiform, nautiform, nitroform, noisestorm, nuciform, nummiform, omniform, order form, oriform, outperform, oviform, paliform, palpiform, pappiform, pediform, peltiform, penniform, perciform, phylliform, piliform, piniform, pinniform, piriform, pisciform, pisiform, planiform, plexiform, plural form, poriform, preconform, punctiform, puriform, pyriform, quadriform, rabiform, ralliform, ramiform, raniform, remiform, reniform, restiform, retiform, retransform, riziform, rostriform, rotiform, rubiform, sacciform, salpiform, salverform, scalpriform, scapiform, scobiform, scombriform, scopiform, scoriform, scrotiform, scutiform, scyphiform, selliform, semiform, seminorm, septiform, serriform, setiform, silver storm, soliform, space platform, spathiform, spiciform, spiniform, spongiform, squaliform, squamiform, stelliform, stilliform, stipiform, stratiform, strigiform, strumiform, styliform, subuliform, sudiform, sulciform, tauriform, technivorm, tectiform, terraform, theiform, thermoform, thunderstorm, tubiform, turdiform, unciform, unciforme, uncoform, unconform, unguiform, uniform, uniforme, ursiform, utriform, valviform, variform, vasiform, vergiform, veriform, vermiform, villiform, vitriform, vulviform, zosteriform

4 syllables:
aciniform, acneiform, actiniform, adeniform, amentiform, amoebiform, ampulliform, anginiform, anguilliform, anseriform, antenniform, antheriform, arboriform, asbestiform, ascidiform, axiniform, bacilliform, baculiform, basaltiform, botuliform, bufoniform, calathiform, calcariform, calceiform, calyciform, campaniform, caniniform, capilliform, cerebriform, choleriform, choreiform, ciliiform, citation form, clypeiform, columbiform, columniform, combining form, cook up a storm, coralliform, coroniform, corticiform, corymbiform, cotyliform, crateriform, cuculiform, cucumiform, cumuliform, cuneiform, cupuliform, cyathiform, cylindriform, cypriniform, cypseliform, digitiform, disuniform, diversiform, dolabriform, drepaniform, dress uniform, drilling platform, electric storm, electroform, elytriform, emboliform, eruciform, etheriform, extractiform, falconiform, fibrilliform, filariform, fistuliform, flabelliform, flagelliform, foveiform, fungilliform, funiliform, galeiform, ganglioform, granitiform, granuliform, herpetiform, humaniform, hydatiform, iodoform, lachrymiform, lageniform, lamelliform, lebensreform, licheniform, limaciform, lumbriciform, magnetic storm, malleiform, mamilliform, mammilliform, maxilliform, medusiform, membraniform, metalliform, meteor swarm, molariform, monadiform, moniliform, morbilliform, multi-platform, multiplatform, muscariform, neuralgiform, nonuniform, nucleiform, obpyriform, oculiform, ostreiform, ovaliform, overinform, overperform, pampiniform, panduriform, papilliform, passeriform, patelliform, pateriform, pectiniform, petaliform, pileiform, placentiform, plumiliform, poculiform, polypiform, proteiform, psittaciform, pumiciform, pustuliform, puzzle-platform, racemiform, radiciform, raduliform, resiniform, rostelliform, ruiniform, sagittiform, saliniform, samariform, sandaliform, scalariform, scutelliform, securiform, serpentiform, singular form, soleiform, somatoform, sonata form, spiculiform, stalactiform, stalactoform, stipitiform, strobiliform, strombuliform, subpyriform, tabetiform, telegraph form, tetaniform, trapeziform, trichiuriform, tubuliform, umbelliform, umbiliform, underperform, urceiform, vacciniform, vaporiform, variciform, verruciform, violent storm, weapons platform, ypsiliform

5 syllables:
aciculiform, acinaciform, acinetiform, aculeiform, aluminiform, alveoliform, ambulacriform, amianthiform, amygdaliform, apoplectiform, application form, araneiform, aspergilliform, campaniliform, cochleariform, cocleariform, columelliform, coraciiform, ectocuniform, electrical storm, embryoniform, entocuniform, epileptiform, equisetiform, gelatiniform, google cloud platform, heroes of the storm, hippocrepiform, hydatidiform, hyperboliform, hypocrateriform, isopodiform, labyrinthiform, laniariform, madreporiform, mandibuliform, mesocuniform, nitro-chloroform, nitrochloroform, operculiform, ovopyriform, paraboliform, pelecaniform, penicilliform, plataleiform, proboscidiform, radiatiform, salamandriform, scarlatiniform, schizophreniform, semipenniform, siliqyiform, stalactitiform, tentaculiform, umbraculiform, varicelliform, varioliform, vesiculiform, zeolitiform

6 syllables:
acetabuliform, adipoceriform, entocuneiform, infundibuliform, mesocuneiform, political platform, terebratuliform

7 syllables:
military uniform, operation desert storm

3 syllables:
angleworm, blastoderm, cabbageworm