use '?' for JOKER (blank)

From letters P, O, N, D, E, R, O, U, S, N, E, S, S, E, S  I made following words

15 letter words

ponderousnesses[18]

13 letter words

ponderousness[16], onerousnesses[13]

12 letter words

porousnesses[14]

11 letter words

repossessed[14], proudnesses[14], pronenesses[13], operoseness[13], roundnesses[12], soundnesses[12], onerousness[11]

10 letter words

endospores[13], nonprossed[13], supersedes[13], resuspends[13], suspenders[13], opennesses[12], poornesses[12], nonprosses[12], purenesses[12], porousness[12], suspensers[12], suspensors[12], donenesses[11], nudenesses[11], rudenesses[11], dournesses[11], sundresses[11], sorenesses[10], surenesses[10], sournesses[10]

9 letter words

endospore[12], sponsored[12], depresses[12], possessed[12], ponderous[12], supersede[12], resuspend[12], suspender[12], unpressed[12], proudness[12], neoprenes[11], proneness[11], responses[11], espressos[11], repossess[11], possessor[11], unpersons[11], suspenser[11], espousers[11], repousses[11], suspensor[11], suspenses[11], endorsees[10], denseness[10], rednesses[10], roundness[10], duenesses[10], dunnesses[10], soundness[10], undresses[10], onenesses[9]

8 letter words

reopened[11], deepness[11], spondees[11], speeders[11], spenders[11], deposers[11], responds[11], unopened[11], pounders[11], espoused[11], sundrops[11], suspends[11], neoprene[10], openness[10], response[10], poorness[10], snoopers[10], sponsons[10], espresso[10], sponsors[10], unperson[10], pronouns[10], pureness[10], espouser[10], repousse[10], suspense[10], espouses[10], soursops[10], endorsee[9], doneness[9], endorses[9], nudeness[9], rudeness[9], dourness[9], resounds[9], sounders[9], duresses[9], sundress[9], soreness[8], neurones[8], enureses[8], neuroses[8], nonusers[8], sureness[8], sourness[8]

7 letter words

preened[10], deepens[10], depones[10], spondee[10], snooped[10], spooned[10], speeder[10], speered[10], spender[10], deposer[10], reposed[10], pernods[10], ponders[10], respond[10], spoored[10], deposes[10], speedos[10], depress[10], pressed[10], pounder[10], unroped[10], unposed[10], perdues[10], perused[10], supered[10], spurned[10], uropods[10], sendups[10], suspend[10], upsends[10], pseudos[10], spoused[10], prenoon[9], penners[9], openers[9], pereons[9], reopens[9], operose[9], operons[9], snooper[9], nonpros[9], pensees[9], sponson[9], peeress[9], reposes[9], persons[9], sponsor[9], spenses[9], presses[9], prosses[9], possess[9], pronoun[9], punners[9], espouse[9], peruses[9], donnees[8], needers[8], sneered[8], endorse[8], reseeds[8], seeders[8], redness[8], resends[8], senders[8], sonders[8], dresses[8], dossers[8], drosses[8], endures[8], ensured[8], enduros[8], resound[8], sounder[8], undoers[8], dueness[8], dunness[8], sunders[8], undress[8], dousers[8], oneness[7], serenes[7], senores[7], noosers[7], sooners[7], seeress[7], sensors[7], soroses[7], neurone[7], neurons[7], nonuser[7], onerous[7], nonuses[7], ensures[7]