The word oleaginousness 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: 20
Highest Scoring Words With Friends™ Play In The Letters oleaginousness
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Seven Letter Word Alert: (97 words)
ageless, agonies, agonise, angulon, assigns, egoless, elogies, eloigns, elusion, engines, enolase, enseals, ensigns, ensouls, ensuing, gaseous, gasless, genesis, genials, genuine, genuses, glasses, glioses, glosses, goalies, goosies, guanine, guesses, guineas, gunless, gussies, igneous, insoles, inulase, ionogen, ionones, isogons, lagoons, lassies, lassoes, leagues, leaning, leasing, legions, lensing, lesions, lessens, lessons, ligases, lineage, lingoes, lioness, loaning, loonies, loosens, loosing, losings, lounges, lousing, nanogel, nongoal, nonsale, noosing, noseans, oleosin, oneness, oogenus, osseins, osseous, salines, saloons, sassing, sealing, sealion, seasons, sensing, sensual, sessile, session, siennas, signals, signees, silanes, singles, sinless, sinuses, slogans, soloing, sonless, sunless, sunnies, unagile, unalign, unloose, unseals, unsling, useless