use '?' for JOKER (blank)

From letters J, U, S, T, I, F, I, A, B, I, L, I, T, Y  I made following words

14 letter words

justifiability[29]

11 letter words

justifiably[26], suitability[16]

10 letter words

fusibility[18]

9 letter words

stability[14], suability[14], usability[14], subtility[14]

8 letter words

futility[14], stultify[14], fabulist[13], suitably[13], subtilty[13], flautist[11]

7 letter words

justify[20], fusibly[15], falsity[13], fattily[13], fustily[13], fatuity[13], tuftily[13], fibulas[12], ability[12], fistula[10], flutist[10], tastily[10], utility[10], stibial[9], tabulis[9], tubaist[9], buttals[9]

6 letter words

justly[16], basify[14], salify[12], faulty[12], fluyts[12], fibula[11], bialys[11], blasty[11], stably[11], suably[11], usably[11], busily[11], butyls[11], subtly[11], faults[9], flatus[9], lyttas[9], slitty[9], tautly[9], slutty[9], alibis[8], bialis[8], tibial[8], tibias[8], tabuli[8], tubist[8], autist[6], lutist[6]

5 letter words

fujis[15], jutty[15], jubas[14], fubsy[13], jails[12], jilts[12], flays[11], fatly[11], fitly[11], fatty[11], fluty[11], fluyt[11], fusty[11], tufty[11], flabs[10], flubs[10], bialy[10], sibyl[10], bitsy[10], batty[10], bitty[10], butyl[10], busty[10], butty[10], alifs[8], fails[8], fiats[8], flats[8], flits[8], lifts[8], sulfa[8], fusil[8], fault[8], tufas[8], tufts[8], laity[8], salty[8], slaty[8], silty[8], styli[8], lytta[8], tasty[8], lusty[8], alibi[7], biali[7], bails[7], basil[7], tibia[7], baits[7], blast[7], blats[7], batts[7], bitts[7], tubal[7], built[7], abuts[7], tabus[7], tsuba[7], tubas[7], battu[7], butts[7], litai[5], alist[5], litas[5], tails[5], atilt[5], titis[5], stilt[5], tilts[5], sault[5], talus[5], sutta[5], tauts[5]

4 letter words

fuji[14], jabs[13], jibs[13], juba[13], jail[11], jilt[11], flab[9], fabs[9], fibs[9], flub[9], fubs[9], alif[7], fail[7], fila[7], fils[7], fiat[7], flat[7], flit[7], lift[7], fast[7], fats[7], fist[7], fits[7], sift[7], bail[6], bias[6], isba[6], ibis[6], albs[6], bals[6], labs[6], slab[6], libs[6], bait[6], blat[6], bast[6], bats[6], stab[6], tabs[6], bits[6], batt[6], bitt[6], suba[6], ilia[4], ails[4], sail[4], sial[4], alit[4], lati[4], tail[4], tali[4], aits[4], sati[4], alts[4], last[4], lats[4], salt[4], slat[4], list[4], lits[4], silt[4], slit[4], tils[4], titi[4], tilt[4], stat[4], tats[4], tits[4]