The word collagenous 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™ Plays In The Letters collagenous
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Seven Letter Word Alert: (25 words)
alcogel, callose, callous, collage, cologne, colonel, congeal, console, counsel, galleon, gallons, glances, glucans, glucose, lagoons, locales, locules, lounges, oogenus, seagull, uncages, unclogs, unclose, unlaces, unloose