The word virtuousness 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: 19
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (62 words)
envious, estrous, inserts, insures, inverts, invests, issuers, nervous, nitrous, norites, nosiest, nutsier, oestrus, orients, osseins, ousters, outruns, oversit, resists, revuist, rosiest, routine, ruinous, russets, seniors, sensors, serious, session, sinters, sinuous, sinuses, sisters, sorties, sourest, stivers, stoners, stonier, stories, stourie, striven, strives, suiters, suitors, sunrise, sunsets, sutures, tensors, tenuous, tissues, tonsure, toruses, tossers, triones, trusses, uniters, unrests, unrivet, unsorts, verists, version, virtues, viruses