use '?' for JOKER (blank)

From letters G, E, O, H, Y, D, R, O, L, O, G, I, S, T, S  I made following words

15 letter words

geohydrologists[24]

14 letter words

geohydrologist[23]

12 letter words

hydrologists[20]

11 letter words

hydrologies[19], hydrologist[19], rheologists[15], horologists[15], soteriology[15]

10 letter words

hotdoggers[16], horologies[14], rhodolites[14], rheologist[14], horologist[14], sisterhood[14], geologists[12], serologist[11], orologists[11]

9 letter words

doggishly[18], hydrogels[17], hierology[16], ogreishly[16], hydrosols[16], holytides[16], histology[16], hysteroid[16], hotdogger[15], rhyolites[15], girlhoods[14], horologes[13], rhodolite[13], ghostlier[13], regoliths[13], rootholds[13], toolsheds[13], slighters[13], osteology[13], disgorges[12], goodliest[11], geologist[11], digestors[11], orologies[10], otologies[10], drooliest[10], orologist[10], oologists[10], oestriols[9]

8 letter words

hydrogel[16], rheology[15], horology[15], ogrishly[15], hydrosol[15], holytide[15], ethology[15], theology[15], thyreoid[15], thyroids[15], thyrsoid[15], hygeists[15], dreggish[14], gorgedly[14], rhyolite[14], slithery[14], hostelry[14], isohyets[14], girlhood[13], higglers[13], delights[13], slighted[13], ideology[13], stodgily[13], horologe[12], dhoolies[12], hoodless[12], goloshes[12], hidroses[12], regolith[12], roothold[12], dhooties[12], hoodiest[12], toeholds[12], toolshed[12], theologs[12], lighters[12], relights[12], slighter[12], ghostier[12], sleights[12], resights[12], sighters[12], soldiery[12], serology[12], dressily[12], etiology[12], elytroid[12], sitology[12], stylised[12], destroys[12], disgorge[11], doggrels[11], sloshier[11], doggiest[11], hostiles[11], slithers[11], hoisters[11], horsiest[11], shorties[11], holsters[11], hostlers[11], orthoses[11], reshoots[11], sheroots[11], shooters[11], soothers[11], orthosis[11], otiosely[11], sisterly[11], styliser[11], serosity[11], goodlier[10], googlies[10], sloggers[10], godliest[10], loggiest[10], digestor[10], grodiest[10], stodgier[10], togglers[10], soggiest[10], oologies[9], soldiers[9], glossier[9], doorless[9], lordoses[9], odorless[9], regosols[9], lordosis[9], girosols[9], oologist[9], stolider[9], solidest[9], osteoids[9], goosiest[9], ologists[9], glisters[9], gristles[9], steroids[9], gorsiest[9], strigose[9], oldsters[9], disroots[9], rosolios[8], oestriol[8], ostioles[8], stoolies[8], estriols[8], rootless[8]

7 letter words

higgled[13], shogged[13], doggish[13], higgler[12], higgles[12], loggish[12], goodish[12], hoggers[12], hoodier[11], hoodies[11], shooled[11], goloshe[11], hirsled[11], ogreish[11], holders[11], doggier[10], doggrel[10], doggies[10], doglegs[10], slogged[10], diggers[10], doggers[10], gloried[9], godlier[9], loggier[9], goodies[9], gigolos[9], googols[9], gilders[9], girdles[9], gliders[9], regilds[9], ridgels[9], soggier[9], lodgers[9], loggers[9], slogger[9], doolies[8], ologies[8], soldier[8], solider[8], glories[8], oroides[8], goosier[8]