use '?' for JOKER (blank)

From letters F, I, C, T, I, O, N, I, Z, A, T, I, O, N, S  I made following words

15 letter words

fictionizations[28]

14 letter words

fictionization[27]

13 letter words

notifications[18]

12 letter words

notification[17]

11 letter words

ionizations[19], incitations[13], initiations[11]

10 letter words

ionization[18], fictionist[15], sonication[12], incitation[12], nictations[12], initiation[10]

9 letter words

zonations[17], inactions[11], onanistic[11], conations[11], nictation[11], incitants[11], citations[11], nonstatic[11], notations[9]

8 letter words

zonation[16], factions[13], fictions[13], nonfacts[13], sainfoin[11], sinfonia[11], fontinas[11], incision[10], inaction[10], conation[10], isatinic[10], actinons[10], canonist[10], contains[10], sanction[10], sonantic[10], nicotins[10], coitions[10], isotonic[10], incitant[10], citation[10], instinct[10], oscitant[10], tactions[10], stiction[10], constant[10], notation[8], ostinati[8], ostinato[8]

7 letter words

canzoni[17], zinnias[15], faction[12], fiction[12], nonfact[12], confits[12], fanions[10], fontina[10], infants[10], anionic[9], niacins[9], actinon[9], contain[9], nicotin[9], coition[9], incants[9], stannic[9], actions[9], atonics[9], cations[9], cantons[9], titanic[9], taction[9], octants[9], cottons[9], anoints[7], nations[7], onanist[7], notions[7], titians[7], instant[7], station[7]

6 letter words

azonic[16], ozonic[16], azotic[16], zinnia[14], fincas[11], ficins[11], fiasco[11], confit[11], fistic[11], fanion[9], fanons[9], foison[9], infant[9], finito[9], nonfat[9], faints[9], niacin[8], anisic[8], casini[8], casino[8], ionics[8], canons[8], conins[8], incant[8], tannic[8], action[8], atonic[8], cation[8], cannot[8], canton[8], actins[8], antics[8], nastic[8], coatis[8], scotia[8], cantos[8], cotans[8], octans[8], tocsin[8], tonics[8], contos[8], nostoc[8], intact[8], otitic[8], octant[8], cotton[8], attics[8], static[8], tincts[8], cottas[8], anions[6], nasion[6], inions[6], onions[6], anoint[6], nation[6], notion[6], isatin[6], sonant[6], nitons[6], titian[6], statin[6], taints[6], tanist[6], titans[6], tatsoi[6], otitis[6], stotin[6]

5 letter words

finca[10], ficin[10], coifs[10], coofs[10], facts[10], fanon[8], naifs[8], finis[8], fanos[8], finos[8], foins[8], infos[8], faint[8], afoot[8], fiats[8], acini[7], ionic[7], ancon[7], canon[7], conin[7], cains[7], canso[7], cions[7], coins[7], icons[7], scion[7], sonic[7], conns[7], coons[7], actin[7], antic[7], coati[7], canto[7], cotan[7], octan[7], ontic[7], tonic[7], conto[7], canst[7], cants[7], scant[7], anion[5], inion[5], onion[5], nonas[5], noons[5], niton[5], antis[5], saint[5]