The word projectiles 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: 27
Highest Scoring Words With Friends™ Play In The Letters projectiles
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Seven Letter Word Alert: (68 words)
coesite, colters, copiers, coterie, creoles, eclipse, ejector, elector, elopers, epistle, erotics, erotise, estriol, jilters, jolters, jostler, loiters, pectose, pelites, pelters, perlite, petiole, petrels, petrols, pierces, poetics, poetise, polices, politer, precise, prelect, project, receipt, recipes, recites, reclips, reclose, recoils, rejects, rejoice, repiles, repilot, replies, replots, reptile, rescope, reslice, resojet, respect, respelt, respice, respite, resplit, retiles, ropiest, roselet, scepter, sceptre, specter, spectre, splicer, spoiler, sterile, toilers, triceps, triples, tripole, tropics