use '?' for JOKER (blank)

From letters J, U, X, T, A, P, O, S, I, T, I, O, N  I made following words

13 letter words

juxtaposition[29]

10 letter words

autotoxins[17]

9 letter words

autotoxin[16], potations[11], outpaints[11], outpoints[11], situation[9]

8 letter words

position[10], potation[10], spittoon[10], opuntias[10], utopians[10], outpaint[10], outpoint[10], pantsuit[10], ostinati[8], ostinato[8], titanous[8], tuitions[8]

7 letter words

outjinx[21], posttax[16], anxious[14], noxious[14], sinopia[9], pianist[9], options[9], potions[9], antipot[9], opuntia[9], utopian[9], utopias[9], outspan[9], spinout[9], utopist[9], outpost[9], titians[7], station[7], tuition[7], intuits[7]

6 letter words

punjis[15], jupons[15], joints[13], jaunts[13], juntas[13], juntos[13], axions[13], taxons[13], toxins[13], auxins[13], pianos[8], poison[8], option[8], potion[8], paints[8], patins[8], pintas[8], ptisan[8], patios[8], patois[8], pantos[8], pinots[8], pintos[8], piston[8], pitons[8], points[8], postin[8], spinto[8], tinpot[8], potato[8], pittas[8], pottos[8], utopia[8], inputs[8], pistou[8], puntos[8], putons[8], unstop[8], isatin[6], titian[6], statin[6], taints[6], tanist[6], titans[6], tatsoi[6], otitis[6], stotin[6], tauons[6], outsin[6], intuit[6], autist[6], taunts[6], outsat[6], outsit[6]

5 letter words

punji[14], jupon[14], jaups[14], pujas[14], joins[12], joint[12], jatos[12], jotas[12], joist[12], sajou[12], jaunt[12], junta[12], junto[12], joust[12], axion[12], ixias[12], axons[12], taxon[12], piano[7], nipas[7], pains[7], pians[7], pinas[7], psoai[7], opsin[7], pions[7], poons[7], snoop[7], spoon[7], inapt[7], paint[7], patin[7], pinta[7], patio[7], panto[7], pinot[7], pinto[7], piton[7], point[7], topoi[7], pitas[7], spait[7], tapis[7], tipis[7], pants[7], pints[7], posit[7], topis[7], stoop[7], topos[7], pitta[7], potto[7], stopt[7], punas[7], pious[7], unapt[7], input[7], punto[7], puton[7], sputa[7], stupa[7], situp[7], punts[7], pouts[7], spout[7], stoup[7], putti[7], putto[7], putts[7], antis[5], saint[5], satin[5], stain[5], tains[5], intis[5], iotas[5], ostia[5], stoai[5], santo[5], snoot[5], toons[5], taint[5], titan[5], tanto[5], titis[5], stint[5], tints[5], stoat[5], toast[5], toits[5], ottos[5], toots[5], unais[5], tauon[5], aunts[5], tunas[5], suint[5], units[5], autos[5], snout[5], tonus[5], taunt[5], sutta[5], tauts[5], stunt[5], stout[5], touts[5]