The word dripstones 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: 15
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (78 words)
deports, deposit, despots, diopter, dioptre, dispose, dissent, dopiest, dossier, editors, indorse, inserts, insteps, norites, nosiest, orients, peridot, periods, persist, persons, pistons, pointed, pointer, ponders, portend, posited, postern, posters, priests, printed, prisons, pronest, protein, pterins, repoint, reposts, respins, respond, respots, rodents, roisted, ropiest, rosiest, rosined, seniors, sinters, snidest, snipers, snorted, sortied, sorties, spiders, spinets, spinode, spinose, spirted, sported, spriest, sprints, sprites, stepson, steroid, stipend, stoners, stonier, storied, stories, strides, striped, stripes, tensors, tierods, tinders, topside, torpids, triones, tripeds, tripods