The word gallinaceous 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: 21
Highest Scoring Words With Friends™ Play In The Letters gallinaceous
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Seven Letter Word Alert: (76 words)
aclinal, aeolian, agnosia, agnosic, agonies, agonise, alcogel, analogs, angelic, calling, callose, callous, canulae, canulas, cauline, causing, ceasing, celling, celosia, cingula, clausal, closing, coaling, coalise, cognise, coinage, collage, collies, collins, congeal, counsel, culling, eloigns, elusion, galenas, galleon, gallons, genials, glacial, glances, glucans, glucose, gluonic, goalies, guineas, gullies, igneous, iguanas, inulase, lacings, lacunae, lanugal, lasagne, leasing, legions, lingoes, lingual, locales, locules, logical, lounges, lousing, lugsail, oilcans, saucing, scaling, seagull, sealing, sealion, selling, unagile, uncages, unclogs, unclose, uncoils, unlaces