use '?' for JOKER (blank)

From letters W, O, N, D, E, R, F, U, L, N, E, S, S, E, S  I made following words

15 letter words

wonderfulnesses[22]

13 letter words

wonderfulness[20]

12 letter words

woefulnesses[18]

11 letter words

needfulness[15], slenderness[12], roundnesses[12]

10 letter words

underflows[17], woefulness[16], sunflowers[16], fenderless[14], fondnesses[14], lewdnesses[14], sundowners[14], unforeseen[13], foulnesses[13], wornnesses[13], donenesses[11], nudenesses[11], loudnesses[11], rudenesses[11], dournesses[11], lonenesses[10], lornnesses[10]

9 letter words

deflowers[16], underflow[16], wonderful[16], fewnesses[15], sunflower[15], enfolders[13], flounders[13], unfolders[13], dowerless[13], unrenewed[13], sundowner[13], woundless[13], fluorenes[12], fulnesses[12], newsreels[12], newnesses[12], woenesses[12], lownesses[12], nownesses[12], sewerless[12], endorsees[10], denseness[10], oldnesses[10], eldresses[10], rednesses[10], delousers[10], unsolders[10], roundness[10], duenesses[10], dulnesses[10], dunnesses[10], soundless[10], soundness[10], undresses[10], selenoses[9], onenesses[9]

8 letter words

deflower[15], flowered[15], reflowed[15], newfound[15], enfolder[12], enserfed[12], fondlers[12], defenses[12], fondness[12], fordless[12], funneled[12], refueled[12], flounder[12], unfolder[12], needfuls[12], founders[12], refounds[12], defusers[12], renowned[12], endowers[12], reendows[12], worsened[12], weedless[12], lewdness[12], downless[12], wordless[12], rundowns[12], sundowns[12], foreseen[11], freeness[11], fernless[11], flensers[11], fresnels[11], foresees[11], selfness[11], flossers[11], fluorene[11], sneerful[11], fleurons[11], fenurons[11], senseful[11], foulness[11], sulfones[11], fuseless[11], newsreel[11], wornness[11], newsless[11], slowness[11], snowless[11], needlers[9], endorsee[9], lessened[9], needless[9], lessoned[9], doneness[9], endorses[9], seedless[9], unreeled[9], ensouled[9], delouser[9], urodeles[9], roundels[9], unsolder[9], nudeness[9], delouses[9], loudness[9], rudeness[9], dourness[9], resounds[9], sounders[9], duresses[9], sundress[9], loneness[8], lornness[8], noseless[8], soleness[8], soreness[8], neurones[8], selenous[8], nounless[8], enureses[8], neuroses[8], nonusers[8], soleuses[8], sureness[8], sourness[8]

7 letter words

fleered[11], fondler[11], defense[11], flensed[11], enfolds[11], fondles[11], feeders[11], refeeds[11], fenders[11], folders[11], refolds[11], flossed[11], fennels[10], oneself[10], nonself[10], feelers[10], refeels[10], flenser[10], fresnel[10], foresee[10], feeless[10], flenses[10], enserfs[10], flosser[10], needler[8], needles[8], donnees[8], needers[8], sneered[8], lenders[8], relends[8], slender[8], resoled[8], endorse[8], rondels[8], endless[8], oldness[8], reseeds[8], seeders[8], eldress[8], redness[8], resends[8], senders[8], dorsels[8], rodless[8], solders[8], sonders[8], ronnels[7], oneness[7], nelsons[7], serenes[7], resoles[7], senores[7], lessees[7], lessens[7]