The word dromedaries 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: 16
Highest Scoring Words With Friends™ Play In The Letters dromedaries
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Seven Letter Word Alert: (60 words)
admired, admirer, admires, adorers, armoire, armored, deaired, dearies, demised, deodars, derider, derides, dermoid, derries, desired, desirer, desmoid, diadems, dormers, dreader, dreamed, dreamer, isomere, madders, married, marries, mirador, misdeed, misdoer, misread, ordered, radioed, radomes, raiders, ramrods, readers, readied, readier, readies, readmes, reamers, rearise, rearmed, rearose, redream, redried, redries, remorse, rereads, resided, resider, roadies, roamers, rodders, seamier, seriema, sidearm, smeared, smearer, soddier