use '?' for JOKER (blank)

From letters W, E, A, T, H, E, R, C, A, S, T, E, R  I made following words

13 letter words

weathercaster[21]

11 letter words

weathercast[19]

10 letter words

shearwater[16], sweetheart[16], reattaches[15], tracheates[15], chatterers[15]

9 letter words

shareware[15], wheatears[15], wreathers[15], thwarters[15], reteaches[14], tracheate[14], chatterer[14], attachers[14], catheters[14], tetrarchs[14], restretch[14], stretcher[14], reheaters[12], earthstar[12], shatterer[12], recreates[11], etceteras[11], castrater[11], scatterer[11], streetcar[11]

8 letter words

eschewer[16], watchers[16], wretches[16], aweather[14], wheatear[14], wreather[14], weathers[14], wreathes[14], thrawart[14], thwarter[14], sawteeth[14], strawhat[14], whetters[14], earaches[13], reachers[13], research[13], searcher[13], cheerers[13], tracheae[13], tracheas[13], cheaters[13], hectares[13], recheats[13], teachers[13], catarrhs[13], charters[13], recharts[13], attacher[13], reattach[13], catheter[13], tetrarch[13], attaches[13], chatters[13], ratchets[13], rehearse[11], hetaerae[11], reheater[11], hetaeras[11], aesthete[11], earthset[11], theaters[11], theatres[11], teethers[11], seawater[11], teawares[11], waterers[11], tweeters[11], recreate[10], caterers[10], recrates[10], retraces[10], terraces[10], erecters[10], reerects[10], secreter[10], etcetera[10], acetates[10], castrate[10], teacarts[10], retracts[10], arrestee[8], stearate[8], retreats[8], treaters[8], resetter[8]

7 letter words

carwash[15], chawers[15], chewers[15], rechews[15], watcher[15], watches[15], whereas[13], weather[13], whereat[13], wreathe[13], earache[12], reacher[12], cheerer[12], reaches[12], archers[12], crasher[12], chaetae[12], trachea[12], cheater[12], hectare[12], recheat[12], reteach[12], teacher[12], catarrh[12], charter[12], rechart[12], escheat[12], teaches[12], chaster[12], rachets[12], ratches[12], etchers[12], retches[12], attache[12], thecate[12], chatter[12], ratchet[12], stretch[12], screwer[12], hearers[10], rehears[10], shearer[10], sheerer[10], hetaera[10], aethers[10], heaters[10], reheats[10], sheeter[10], trasher[10], theater[10], theatre[10], thereat[10], teether[10], hastate[10], esthete[10], teethes[10], hatters[10], shatter[10], threats[10], tethers[10], seaware[10], rewears[10], swearer[10], wearers[10], teaware[10], waterer[10], careers[9], creaser[9], acerate[9], caterer[9], recrate[9], retrace[9], terrace[9], erecter[9], reerect[9], caseate[9], carates[9], cerates[9], creates[9], ecartes[9], secrete[9], carters[9], craters[9], tracers[9], acetate[9], teacart[9], retract[9], casette[9], scatter[9], tercets[9], aerates[7], erratas[7], retears[7], serrate[7], tearers[7], steerer[7], tartare[7], retreat[7], treater[7], estreat[7], restate[7], retaste[7], teeters[7], tartars[7], ratters[7], restart[7], starter[7], terrets[7]