use '?' for JOKER (blank)

From letters G, E, O, T, E, C, T, O, N, I, C, A, L, L, Y  I made following words

15 letter words

geotectonically[23]

13 letter words

cytogenetical[21]

12 letter words

tectonically[19]

11 letter words

cytological[19], cytogenetic[19], genetically[17], collocating[16], geotectonic[16], tonetically[16]

10 letter words

acetylenic[17], ecological[15], lactogenic[15], collecting[15], colocating[15], collection[14], allogeneic[13], enological[13], collegiate[13], teleologic[13]

9 letter words

cytologic[17], conically[16], colonelcy[16], cyclonite[16], coenocyte[16], genically[15], cognately[15], ectogenic[14], geotactic[14], ontically[14], tonically[14], tactilely[14], collocate[13], contactee[13], elegantly[13], genitally[13], aetiology[13], teleology[13], allogenic[12], collegian[12], oligocene[12], clientage[12], genetical[12], colligate[12], telegonic[12], collating[12], colleting[12], oogenetic[12], collation[11], intellect[11], negotiate[10], allotting[10], totalling[10], lineolate[9], linoleate[9]

8 letter words

glycolic[16], coagency[16], glyconic[16], calycine[15], cyclonal[15], acetylic[15], cyclitol[15], cyanotic[15], elegancy[14], gynoecia[14], aglycone[14], collying[14], cooeying[14], cooingly[14], cogently[14], cetology[14], gonocyte[14], cottagey[14], ecologic[13], coacting[13], coitally[13], locality[13], tenacity[13], intactly[13], canticle[12], elenctic[12], acetonic[12], lactonic[12], colocate[12], coaction[12], tectonic[12], genially[12], alloying[12], legality[12], tallying[12], telegony[12], antilogy[12], etiology[12], collegia[11], collagen[11], cooeeing[11], neologic[11], agenetic[11], cleating[11], electing[11], eclogite[11], octangle[11], locating[11], cogitate[11], clotting[11], latently[11], tonality[11], colonial[10], lancelet[10], cliental[10], lenticel[10], ocellate[10], localite[10], teocalli[10], election[10], ecotonal[10], location[10], cotillon[10], tentacle[10], taconite[10], galenite[9], gelatine[9], legatine[9], elongate[9], gelation[9], legation[9], tollgate[9], totaling[9], tootling[9], tenaille[8], atenolol[8], etiolate[8], allottee[8]

7 letter words

calicle[11], cenacle[11], calcine[11], licence[11], coeliac[11], cocaine[11], oceanic[11], conceal[11], conical[11], laconic[11], colonic[11], calcite[11], collect[11], coenact[11], elegiac[10], angelic[10], anglice[10], galenic[10], calling[10], celling[10], collage[10], college[10], logical[10], coinage[10], congeal[10], coaling[10], cologne[10], cooling[10], locoing[10], genetic[10], neglect[10], catling[10], talcing[10], ecotage[10], otalgic[10], coagent[10], cognate[10], nacelle[9], cineole[9], colleen[9], colonel[9], centile[9], licente[9], aloetic[9], collate[9], acetone[9], galilee[8], lineage[8], gallein[8], nigella[8], allonge[8], galleon[8], galloon[8], egalite[8], tillage[8], elegant[8], atingle[8], elating[8], gelatin[8], genital[8], tagline[8], gentile[8], gellant[8], gillnet[8], telling[8], tollage[8], galliot[8], lineate[7]