The word discourteous 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (86 words)
ceroids, coedits, cooties, corsets, cosiest, coursed, courses, courted, couture, credits, crossed, crudest, cruised, cruises, crusted, curious, decrust, detours, directs, disroot, dissect, doctors, dossier, dousers, ductors, dusters, dustier, duteous, ecotour, editors, eductor, erotics, escorts, escudos, estrous, eudicot, ioduret, oecists, oestrus, osteoid, ousters, outdoer, outdoes, outride, outrode, outside, reducts, riotous, roisted, roosted, rosiest, rudites, rustics, scooted, scooter, scoured, scouted, scouter, sectors, serious, sootier, sortied, sorties, sourced, sources, sourest, steroid, storied, stories, stourie, strides, studier, studies, studios, sucrose, sudsier, suiters, suitors, sutured, sutures, tedious, tierods, tissued, toroids, toruses, trussed