use '?' for JOKER (blank)

From letters W, A, S, T, E, F, U, L, N, E, S, S, E, S  I made following words

14 letter words

wastefulnesses[20]

12 letter words

wastefulness[18]

11 letter words

awfulnesses[17], falsenesses[14], stalenesses[11], sultanesses[11]

10 letter words

safenesses[13], selfnesses[13], flatnesses[13], fastnesses[13], latenesses[10], saltnesses[10]

9 letter words

fewnesses[15], awfulness[15], falseness[12], fleetness[12], feastless[12], fatnesses[12], fulnesses[12], waenesses[12], sweetness[12], wetnesses[12], senseless[9], selenates[9], staleness[9], assetless[9], sultaness[9]

8 letter words

wasteful[14], safeness[11], selfness[11], feetless[11], flatness[11], fastness[11], senseful[11], fuseless[11], flatuses[11], sulfates[11], newsless[11], sweetens[11], tweeness[11], selenate[8], lateness[8], seatless[8], sensates[8], saltness[8], eusteles[8], tuneless[8], unsteels[8]

7 letter words

fewness[13], feeless[10], flenses[10], falsest[10], fatless[10], fastens[10], fatness[10], easeful[10], fulness[10], teenful[10], sulfate[10], flaunts[10], fetuses[10], sunfast[10], aweless[10], weasels[10], waeness[10], awnless[10], seesaws[10], sweeten[10], wetness[10], walnuts[10], lessees[7], lessens[7], lateens[7], leanest[7], stelene[7], teasels[7], teleses[7], entases[7], sateens[7], senates[7], sensate[7], nestles[7], netless[7], tassels[7], assents[7], uneases[7], sensual[7], unseals[7], useless[7], sunless[7], eluates[7], eustele[7], eluants[7], eluents[7], unsteel[7], salutes[7], taluses[7], unseats[7], sultans[7], tussles[7], sunsets[7]

6 letter words

fewest[12], flanes[9], flense[9], feases[9], fesses[9], festal[9], fleets[9], fasten[9], feasts[9], safest[9], unsafe[9], fusees[9], sulfas[9], fusels[9], snafus[9], fusses[9], flaunt[9], fluent[9], unfelt[9], faults[9], flatus[9], flutes[9], funest[9], weasel[9], newels[9], seesaw[9], awless[9], swales[9], sewans[9], atween[9], etwees[9], newest[9], tweens[9], sweats[9], tawses[9], wastes[9], aneles[6], easels[6], leases[6], lessee[6], lenses[6], lessen[6], lasses[6], nesses[6], senses[6], assess[6], sasses[6], lateen[6], elates[6], stelae[6], teasel[6], enates[6], sateen[6], senate[6], latens[6], nestle[6], teases[6], leasts[6], slates[6], stales[6], steals[6], tassel[6], teslas[6], sleets[6], steels[6], steles[6], assent[6], sanest[6], stanes[6], tenses[6], slants[6], assets[6], stases[6], tasses[6], aeneus[6], unease[6], unseal[6], anuses[6], usneas[6], ensues[6], unless[6], susses[6], eluate[6], eluant[6], lunate[6], eluent[6], salute[6], elutes[6], unseat[6], tenues[6], sultan[6], lunets[6], sautes[6], saults[6], tussal[6], tussle[6], sunset[6], unsets[6], tusses[6]