The word conservatory is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 22
Highest Scoring Words With Friends™ Plays In The Letters conservatory
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Seven Letter Word Alert: (83 words)
atoners, canoers, canters, cantors, carrots, carroty, carters, cartons, cartoon, carvers, carvone, caverns, cavorts, coarsen, coarser, coaster, consort, convert, conveys, convoys, corneas, corners, cornets, coronas, coroner, coronet, coverts, coyotes, craters, cratons, cravers, crayons, creator, crooner, cyanose, enactor, errants, nectars, nectary, octanes, octaves, octynes, oocytes, orators, oratory, ornater, overact, overran, oversat, ovocyte, racoons, rancors, ranters, reactor, recants, recoats, rectors, rectory, reroast, reroots, roaster, rooster, rooters, savorer, scanter, scooter, scorner, senator, serovar, servant, snorter, sorcery, starver, strayer, taverns, ternary, tracers, tracery, trances, treason, trocars, tycoons, vectors