use '?' for JOKER (blank)

From letters J, O, H, N, S, O, N, G, R, A, S, S, E, S  I made following words

14 letter words

johnsongrasses[25]

12 letter words

johnsongrass[23]

9 letter words

grossness[10]

8 letter words

johannes[18], johnsons[18], jargoons[16], hognoses[12], hoarsens[11], senhoras[11], rashness[11], oreganos[9], organons[9], assessor[8]

7 letter words

johnson[17], joshers[17], jargoon[15], jargons[15], joannes[14], hognose[11], hangers[11], rehangs[11], gorhens[11], gnashes[11], sorghos[11], nonhero[10], hoarsen[10], senhora[10], onshore[10], harness[10], shorans[10], noshers[10], senhors[10], snashes[10], oregano[8], organon[8], nonages[8], nonegos[8], onagers[8], oranges[8], orgones[8], sangers[8], sarongs[8], engross[8], gossans[8], gassers[8], grasses[8], grosses[8], reasons[7], senoras[7], noosers[7], sooners[7], seasons[7], sarsens[7], saroses[7], serosas[7], sensors[7], soroses[7]

6 letter words

josher[16], joshes[16], jargon[14], jagers[14], josses[13], hanger[10], rehang[10], gherao[10], gorhen[10], hogans[10], gasher[10], gerahs[10], sorgho[10], gashes[10], sanghs[10], hennas[9], honans[9], ahorse[9], ashore[9], hoarse[9], shoran[9], herons[9], honers[9], nosher[9], senhor[9], honors[9], hanses[9], noshes[9], rashes[9], shares[9], shears[9], sharns[9], horses[9], hosers[9], shoers[9], shores[9], sashes[9], nonage[7], nonego[7], onager[7], orange[7], orgone[7], agones[7], genoas[7], angers[7], ranges[7], sanger[7], argons[7], groans[7], orangs[7], organs[7], sarong[7], genros[7], goners[7], gossan[7], gnoses[7], segnos[7], gooses[7], gasser[7], sarges[7], sargos[7], gorses[7], ogress[7], sorgos[7], gasses[7], arseno[6], reason[6], senora[6], nooser[6], sooner[6], sennas[6], season[6], nooses[6], sarsen[6], snares[6], serosa[6], arsons[6], sonars[6], senors[6], sensor[6], snores[6], rooses[6], assess[6], sasses[6]

5 letter words

hajes[15], johns[15], jager[13], janes[12], jeans[12], jones[12], rajes[12], hogan[9], gerah[9], gnash[9], hangs[9], sangh[9], hongs[9], henna[8], honan[8], heron[8], honer[8], honor[8], ashen[8], hanse[8], hones[8], hosen[8], shone[8], shoon[8], hares[8], hears[8], rheas[8], share[8], shear[8], agone[6], genoa[6], anger[6], range[6], regna[6], argon[6], groan[6], orang[6], organ[6], genro[6], goner[6], agons[6], segno[6], goose[6], goons[6], agers[6], gears[6], rages[6], sager[6], sarge[6], senna[5], aeons[5], nonas[5], neons[5], nones[5], noose[5], noons[5], earns[5], nares[5], nears[5]