use '?' for JOKER (blank)

From letters L, U, G, U, B, R, I, O, U, S, N, E, S, S  I made following words

14 letter words

lugubriousness[17]

10 letter words

subregions[13], lugubrious[13], subsoilers[12]

9 letter words

blessings[12], obsessing[12], subregion[12], bulginess[12], buglosses[12], bogusness[12], burliness[11], subsoiler[11], sublessor[11], burnouses[11], roseslugs[10], longueurs[10], lousiness[9], surliness[9], unserious[9]

8 letter words

obligers[11], sobering[11], blessing[11], glibness[11], blueings[11], blousing[11], blungers[11], bunglers[11], burgeons[11], busgirls[11], subrings[11], bussings[11], subgenus[11], nubilose[10], blousier[10], sublines[10], suberins[10], boursins[10], business[10], soubises[10], subsoils[10], nebulous[10], nubilous[10], subrules[10], suberous[10], resoling[9], loginess[9], slingers[9], glossier[9], goriness[9], glossies[9], songless[9], glossers[9], ligneous[9], loungers[9], gluiness[9], ugliness[9], rungless[9], griseous[9], roseslug[9], surgeons[9], longueur[9], rugulose[9], rissoles[8], rosiness[8], elusions[8], soilures[8], neurosis[8], resinous[8], sunrises[8], sourness[8], sensuous[8], usurious[8]

7 letter words

ignoble[10], obliger[10], obliges[10], bingoes[10], biogens[10], belongs[10], globins[10], goblins[10], gerbils[10], bingers[10], borings[10], sorbing[10], bigness[10], bigoses[10], bossing[10], gibsons[10], blueing[10], bulgier[10], blunger[10], bungler[10], burling[10], burgeon[10], blunges[10], bungles[10], bluings[10], bougies[10], bousing[10], rugbies[10], buglers[10], bulgers[10], burgles[10], busgirl[10], subring[10], brogues[10], rubigos[10], busings[10], bussing[10], bugloss[10], berlins[9], boilers[9], reboils[9], ribless[9], bossier[9], riboses[9], orbless[9], blisses[9], bossies[9], brisses[9], subline[9], burnies[9], suberin[9], ourebis[9], roubles[9], bournes[9], unrobes[9], unsober[9], boursin[9], soubise[9], blouses[9], boluses[9], subsoil[9], bonuses[9], eloigns[8], legions[8], lingoes[8], longies[8], lingers[8], slinger[8], glories[8], eringos[8], ignores[8], regions[8], signore[8], longers[8], singles[8], losings[8], grilses[8], ingress[8], resigns[8], signers[8], singers[8], glosser[8], regloss[8], engross[8], grisons[8], signors[8], sorings[8], glosses[8], grosses[8], lounger[8], louring[8], igneous[8], lounges[8], lousing[8], ligures[8], reusing[8], lungers[8], rulings[8], surgeon[8], rousing[8], souring[8], gunless[8], gunsels[8], sousing[8], nerolis[7], insoles[7], lesions[7], lioness[7], lorises[7], rissole[7], seniors[7], sonsier[7], sinless[7], essoins[7], osseins[7], session[7], lessons[7], sonless[7], seisors[7], lessors[7], sensors[7], elusion[7], lousier[7], soilure[7], urinose[7], silenus[7], ensouls[7], insouls[7]