use '?' for JOKER (blank)

From letters V, E, N, T, U, R, O, U, S, N, E, S, S, E, S  I made following words

15 letter words

venturousnesses[18]

13 letter words

nervousnesses[16], venturousness[16], tenuousnesses[13], strenuousness[13]

11 letter words

overtnesses[14], nervousness[14], sternnesses[11], tenuousness[11]

10 letter words

sorenesses[10], sonneteers[10], surenesses[10], sournesses[10], truenesses[10], unstresses[10]

9 letter words

overtness[12], votresses[12], unevenest[12], outserves[12], venturous[12], onenesses[9], sonneteer[9], tenseness[9], terseness[9], sternness[9], sternsons[9], sunstones[9], oestruses[9], strenuous[9], untrusses[9]

8 letter words

venenose[11], overseen[11], evenness[11], oversees[11], severest[11], estovers[11], oversets[11], unevener[11], revenues[11], unreeves[11], unnerves[11], overuses[11], ventures[11], outserve[11], vestures[11], soreness[8], enterons[8], tenoners[8], serenest[8], estrones[8], sternson[8], stenoses[8], stresses[8], neurones[8], enureses[8], neuroses[8], nonusers[8], sureness[8], sourness[8], neutrons[8], neustons[8], sunstone[8], trueness[8], stunners[8], tonsures[8], estruses[8], unstress[8], tussores[8], sensuous[8], uteruses[8]

7 letter words

venenes[10], eveners[10], veneers[10], oversee[10], evenest[10], venters[10], overset[10], revotes[10], vetoers[10], steeves[10], vestees[10], revests[10], versets[10], verstes[10], stovers[10], votress[10], revenue[10], unreeve[10], unnerve[10], unroven[10], oeuvres[10], overuse[10], nervous[10], venuses[10], venture[10], vesture[10], oneness[7], serenes[7], senores[7], seeress[7], sensors[7], enteron[7], tenoner[7], entrees[7], retenes[7], teeners[7], rennets[7], tenners[7], estrone[7], tonners[7], sennets[7], sonnets[7], nesters[7], renests[7], resents[7], stereos[7], nestors[7], stoners[7], tensors[7], tresses[7], tossers[7], neurone[7], neurons[7], nonuser[7], nonuses[7], ensures[7], neutron[7], outseen[7], neuston[7], neuters[7], retunes[7], tenures[7], tureens[7], stunner[7], tenours[7], tonsure[7], turnons[7], outsees[7], tonuses[7], unrests[7], estrous[7], oestrus[7], ousters[7], sourest[7], souters[7], stoures[7], tussore[7], sunsets[7], russets[7], trusses[7], tussers[7], tussors[7], untunes[7], tenuous[7], outruns[7], runouts[7], sutures[7], untruss[7], tussurs[7]

6 letter words

reseen[6], serene[6], resees[6], sneers[6], eroses[6], senors[6], sensor[6], snores[6], nesses[6], senses[6], entree[6], eterne[6], retene[6], teener[6], rennet[6], tenner[6], tonner[6], sennet[6], nonets[6], sonnet[6], tenons[6], tonnes[6], enters[6], nester[6], renest[6], rentes[6], resent[6], tenser[6], ternes[6], treens[6], stereo[6], nestor[6], noters[6], stoner[6], tenors[6], tensor[6], toners[6], trones[6], tenses[6], setose[6], onsets[6]